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Sheet-Pan Chicken FajitasMeal Prep
High ProteinGluten FreeDairy Free

Sheet-Pan Chicken Fajitas

One pan, one cutting board, four servings of meal-prepped protein heaven.

Prep

10m

Cook

25m

Total

35m

Servings

4

kcal

425

Protein

42g

Carbs

32g

Fat

14g

Macros per serving

Allergen info

Contains: Gluten, Dairy.

GlutenDairy

Auto-detected from the ingredient list. Always double-check labels on packaged items (e.g. protein powders, sauces, breads), many are produced in facilities that also handle nuts, soy, milk, wheat or eggs. If you have a severe allergy, do not rely on this list alone.

Overview

Why it works

The single best meal-prep recipe in the library. Slice, season, roast - four servings of fajita filling that pivot into burritos, bowls, salads or lettuce wraps all week.

  • Chicken thigh stays juicy after reheating - far more forgiving than breast for meal prep.
  • High-heat roasting caramelizes the peppers and onions for restaurant-grade flavor.
  • Built-in macro flexibility - you control the carb (rice, tortilla, lettuce, none).

Ingredients

Ingredients · 4 servings

Sheet pan

  • 700 g boneless skinless chicken thighs, sliced
  • 2 red bell peppers, sliced
  • 2 green bell peppers, sliced
  • 1 yellow bell pepper, sliced
  • 1 large red onion, sliced

Seasoning

  • 2 tbsp olive oil
  • 1 tbsp smoked paprika
  • 2 tsp cumin
  • 1 tsp chili powder
  • 1 tsp garlic powder
  • 1 tsp onion powder
  • 1 tsp salt
  • Juice of 1 lime

To serve (your choice)

  • Whole-wheat tortillas, rice, or lettuce cups
  • Greek yogurt or sour cream
  • Salsa, avocado, fresh cilantro

Instructions

Step by step

  1. 1

    Preheat your oven to 230 °C / 450 °F and line one or two large sheet pans with parchment paper.

  2. 2

    In a large bowl, combine the sliced chicken thighs, bell peppers and red onion.

  3. 3

    Drizzle the olive oil over everything, then add the smoked paprika, cumin, chili powder, garlic powder, onion powder and salt; toss until every piece is evenly coated.

  4. 4

    Spread the chicken and vegetables across the sheet pan or pans in a single layer without piling them on top of each other; crowding causes steaming instead of roasting.

  5. 5

    Roast for 20 minutes, then stir everything with a spatula to expose new surfaces to the heat.

  6. 6

    Return to the oven for another 5 minutes until the chicken reads 74 °C / 165 °F internally and the vegetable edges have dark, caramelized char.

  7. 7

    Squeeze the lime juice over the hot pan as soon as it comes out of the oven.

  8. 8

    Serve immediately in tortillas, rice bowls or lettuce cups with Greek yogurt, salsa, avocado and cilantro, or portion into four meal-prep containers for the week.

Pro Tips

Coach-level details

  • Use two sheet pans if it looks crowded - overcrowding steams instead of roasts.
  • Save pan juices and pour over your reheated portions during the week.
  • Try the broiler for the last 2 minutes for a stronger char.

Storage & Swaps

Keep it, swap it, save it

Storage

  • 4 days refrigerated.
  • Reheats best in a skillet, 4 minutes covered, then 1 minute uncovered.
  • Label containers with the prep date.

Smart swaps

  • Swap chicken thigh for breast (reduce cook time 5 min), shrimp, or extra-firm tofu.
  • Add 1 tsp chipotle in adobo for smoky heat.
  • Mexican rice base for cutting macros, cauliflower rice for low-carb week.

Pair with a program

Eating right is half the result.

Plug this recipe into an Onyx program for the other half - periodized training that actually moves the needle.

Browse programs