Prepare the Marinade:

In a large resealable plastic bag, combine vegetable oil, chili powder, dried oregano, garlic powder, onion powder, ground cumin, salt, black pepper, and ground cayenne pepper. This will be your fajita seasoning.

Marinate the Chicken & Vegetables:

Add the chicken tenders, sliced bell peppers, and sliced onion to the bag. Seal the bag and shake to mix all the ingredients together, ensuring the chicken and veggies are well coated in the seasoning mixture.

Marinate in the refrigerator for 30 minutes to 2 hours to allow the flavors to develop.

Preheat the Oven:

Preheat your oven to 400°F (200°C).

Prepare the Sheet Pan:

Line a rimmed sheet pan with aluminum foil for easy cleanup (or you can grease the pan with nonstick cooking spray if preferred).

Roast the Chicken and Vegetables:

Spread the marinated chicken and vegetable mixture evenly on the prepared sheet pan.

Roast in the preheated oven for 15 to 20 minutes, stirring halfway through, until the chicken is fully cooked (internal temperature should reach at least 165°F / 74°C) and the bell peppers are softened.

Garnish and Serve:

Once cooked, sprinkle fresh cilantro over the fajita mixture and squeeze the juice of ½ lime over the top.

Stir everything to distribute the cilantro and lime juice.

Serve the fajitas with warm tortillas, over rice, or with your favorite toppings.

Recipe Tips:

Variety of Peppers: You can use a mix of bell peppers (red, yellow, green, orange) and even spicy peppers like jalapeños for extra heat.

Nonstick Cooking Spray: If you don’t want to use aluminum foil, simply grease the sheet pan with nonstick cooking spray for easier cleanup.

Tortillas or Rice: Serve the fajita mixture in flour tortillas for classic fajitas or over rice for a hearty, gluten-free option.

Health Considerations and Nutritional Value:

This recipe is low in calories and high in lean protein, making it a healthy choice. It’s also packed with vegetables, adding fiber, vitamins, and antioxidants. The use of chicken tenders keeps the dish light and nutritious, and the fajita seasoning provides a ton of flavor without excess added sugar or fat.