Savor the sizzle of fajitas without the carbs! This vibrant, make-ahead salad layers smoky paprika-lime chicken, caramelized peppers and onions, and crisp romaine under a cool avocado-lime dressing. Every forkful tastes like weekend take-out, yet the macros are weekday-approved—under 9 g net carbs and a whopping 38 g protein per jar. Whether you’re juggling back-to-back Zoom calls, packing office lunches, or simply trying to get dinner on the table in under five minutes, these portable mason-jar salads have your back. I developed the recipe during the busiest quarter of my corporate year; with thirty minutes of Sunday prep I coasted through twelve effortless dinners and never felt the urge to raid the vending machine. If you can whisk, slice, and sear, you can master this colorful, meal-prep miracle.

Why This Recipe Works

One cutting board: Slice once, cook once, eat all week.
Layered jar method: Keeps lettuce crisp for five full days—no sad, wilted salads.
Low-carb, not low-flavor: Smoked paprika, cumin, and chili powder recreate that authentic fajita bite.
High-protein macros: 38 g protein keeps you satisfied through late-night study sessions or gym sessions.
Freezer-friendly chicken: Double the seasoning, freeze half the strips raw—future you says thanks.
Family-customizable: Swap steak, shrimp, or tofu and still clock in under 10 g carbs.

Ingredients You'll Need

Great salads start with great groceries. Below are my tested favorites, plus swaps so you can shop your pantry first.

Chicken breast tenders – Look for even-sized pieces; they cook in half the time of full breasts. Swap: boneless thighs for a juicier bite (adds 1 g fat per serving).
Bell peppers – A mix of red and orange supplies vitamin C and candy-sweet flavor once seared. Green peppers are traditional but slightly bitter; use them if you enjoy Tex-Mex authenticity.
Red onion – Its mild sweetness intensifies when charred. Yellow onion works in a pinch.
Romaine hearts – The sturdiest low-carb base; iceberg shreds get watery and spinach bruises by Wednesday.
Avocado oil – Neutral, high-heat, heart-healthy. Olive oil is fine for stovetop but skip extra-virgin to avoid bitterness.
Fresh lime – Zest and juice brighten everything. Bottled juice tastes flat; trust me, I tested.
Smoked paprika – The secret to that “grilled outside” nuance even when you cook on an electric stove.
Cumin & chili powder – Buy new jars yearly; spices lose 50% potency after twelve months.
Garlic
Avocado – Adds creaminess so you can skip carb-heavy ranch. Choose fruit that yields slightly at the stem end.
Greek yogurt – Plain, full-fat thickens dressing while adding tangy protein. Swap: sour cream.
Cilantro – Love it or leave it; parsley works for the haters.
Cotija or shredded cheddar – Salty pop without many carbs. Omit for Whole30.
Jalapeño – Optional but recommended for gentle heat. Remove ribs and seeds for mild.

How to Make Meal Prep Chicken Fajita Salad For A Low-Carb Dinner

Whisk the quick marinade

In a medium bowl combine 2 Tbsp avocado oil, juice and zest of 1 lime, 1 tsp smoked paprika, 1 tsp cumin, ½ tsp chili powder, ½ tsp kosher salt, ¼ tsp black pepper, and 1 grated garlic clove. The mixture should resemble wet sand—thick enough to cling to the chicken.

Slice and coat the chicken

Pat 1.5 lb (680 g) chicken tenders dry; slice thicker pieces horizontally so everything is ½-inch thick. Toss in the marinade until glossy. Cover and refrigerate 15 minutes while you prep vegetables—up to 24 hours for deeper flavor.

Sear the peppers & onions

Heat 1 Tbsp avocado oil in a 12-inch stainless or cast-iron skillet over medium-high until shimmering. Add 2 sliced bell peppers and ½ thin-sliced red onion; sprinkle with ¼ tsp salt. Sauté 4 minutes until blistered at the edges but still crisp. Transfer to a plate; tent to keep warm.

Cook the chicken

In the same hot skillet lay chicken pieces flat; reserve extra marinade. Cook 3 minutes untouched to build fond (flavor!), flip, brush with reserved marinade, and cook 2-3 minutes more until centers reach 160°F. Rest 5 minutes, then slice into strips.

Blend the avocado-lime dressing

In a mini food processor blitz ½ ripe avocado, ¼ cup plain Greek yogurt, juice of 1 lime, 2 Tbsp water, 1 Tbsp olive oil, ¼ tsp salt, and handful cilantro until silky. Thin with extra water 1 tsp at a time for a pourable consistency.

Build the mason-jar salads

Use 4 wide-mouth 24-oz jars. Spoon 2 Tbsp dressing into each bottom. Layer: peppers/onions, chicken, 2 Tbsp shredded cheese, chopped romaine to the top. Seal. The lettuce stays 2 inches above the dressing barrier—crisp until Friday.

Serve or store

Invert onto a plate, letting dressing flow down, or shake and eat straight from the jar. Add crushed pork rinds or toasted pepitas for crunch if desired.

Expert Tips

Hot pan, cold oil

Heat your skillet until a drop of water dances before adding oil; this prevents sticking and yields restaurant-quality char.

Double the dressing

The avocado-lime blend doubles as a veggie dip or burger sauce and keeps 4 days refrigerated with plastic wrap pressed to the surface.

Flash-cool chicken

Spread hot chicken on a sheet pan 10 minutes before jarring. Steam escapes, so condensation won’t water down your greens.

Vacuum-seal lids

Twist bands firmly but not Hulk-tight; a slight vacuum forms while chilling, locking out oxygen and keeping herbs neon-green.

Sheet-pan variation

Roast everything at 425°F on one tray for 18 minutes, no babysitting. Broil 2 minutes at the end for extra char.

Knife-skills hack

Stack and slice peppers lengthwise first, then crosswise for faster, uniform strips that feel “fajita-authentic.”

Variations to Try

Steak version: Substitute 1 lb flank steak, sliced against grain ¼-inch thick. Marinate 30 minutes; sear 2 minutes per side for medium-rare.
Shrimp fajita: Use 1½ lb peeled shrimp; reduce cooking time to 1 minute per side. Add a pinch of oregano for coastal flair.
Vegetarian cauliflower: Replace chicken with 1 medium head cauliflower florets tossed in 2 Tbsp oil and seasoning. Roast 20 minutes at 425°F.
Extra-spicy: Keep jalapeño seeds, add ⅛ tsp chipotle powder, and drizzle finished salad with Mexican hot sauce.
Dairy-free: Swap Greek yogurt for coconut yogurt and omit cheese; add 2 Tbsp toasted sunflower seeds for richness.

Storage Tips

Refrigerator: Mason-jar salads keep 5 days when assembled as directed. Store any extra chicken and vegetables separately if you prefer to switch up greens mid-week.

Freezer: Marinated, uncooked chicken strips freeze beautifully for 3 months. Thaw overnight in the fridge, pat dry, then proceed with searing. Do not freeze assembled salads—the lettuce will not forgive you.

Reheat: Warm chicken and veggies 60 seconds in microwave if you crave a hot-cold contrast; pour off jar dressing first so greens stay cool and crisp.

Frequently Asked Questions

Absolutely—thaw completely, pat very dry, then marinate. Frozen chicken releases extra water which can dilute flavor and prevent browning.

BPA-free plastic meal-prep bowls work; place dressing in the smallest lidded container and nest it inside the larger bowl of greens to keep them separate.

The lime juice in the dressing slows oxidation, but pressing plastic wrap directly onto the surface before sealing the jar virtually stops browning for 5 days.

Yes! Each serving contains roughly 9 g net carbs, well within typical keto limits. To drop carbs further, omit bell peppers and use poblano instead.

Definitely! Grill chicken and veggies on a well-oiled grate over medium-high heat (400°F) 4 minutes per side for chicken, 6 minutes total for vegetables.

The recipe is naturally nut-free. If you add crunchy toppings, choose toasted pumpkin seeds or crushed pork rinds instead of almonds or pecans.

Meal Prep Chicken Fajita Salad For A Low-Carb Dinner

Why This Recipe Works

Ingredients You'll Need