Description

These vibrant, oven-roasted fajitas deliver all the sizzling flavor of a classic Mexican-inspired dinner without relying on heavy salt. A quick homemade spice blend and a finishing squeeze of fresh lime ensure the chicken and peppers are boldly seasoned, tender, and ready for your favorite toppings.

Ingredients

Scale

Salt-Free Fajita Seasoning

1 tablespoon chili powder
1 teaspoon ground cumin
1 teaspoon smoked paprika
1 teaspoon garlic powder
1/2 teaspoon onion powder
1/2 teaspoon dried oregano

Fajita Mix

1 1/2 pounds (680g) boneless, skinless chicken breasts, sliced into 1/2-inch strips
1 large red bell pepper, sliced into strips
1 large yellow bell pepper, sliced into strips
1 medium green bell pepper, sliced into strips
1 large red onion, halved and sliced
2 tablespoons (30ml) olive oil

Finishing Touches

1 tablespoon (15ml) fresh lime juice
1/4 cup loosely packed fresh cilantro, chopped

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Instructions

Preheat and prep: Preheat the oven to 425°F (220°C). Line a large, rimmed baking sheet with parchment paper or heavy-duty aluminum foil to make cleanup easier.
Mix the spices: In a small bowl, whisk together the chili powder, ground cumin, smoked paprika, garlic powder, onion powder, and dried oregano until fully combined.
Season the filling: Place the chicken strips, sliced red, yellow, and green bell peppers, and sliced red onion directly onto the prepared baking sheet. Drizzle evenly with the olive oil, then sprinkle the homemade seasoning blend over the top. Use your hands or tongs to toss everything vigorously until the chicken and vegetables are thoroughly and evenly coated.
Arrange and roast: Spread the mixture out into a single, even layer, ensuring the chicken strips are not folded over or stacked on top of each other. Roast in the oven for 15 to 18 minutes, or until the vegetables are tender with slightly browned edges and the chicken is cooked through, reaching an internal temperature of 165°F (74°C).
Finish and serve: Remove the pan from the oven. Immediately drizzle the fresh lime juice over the hot fajita mixture and scatter the chopped cilantro on top. Toss gently on the pan and serve right away with warm, low-sodium tortillas and your preferred toppings.

Notes

Why It Works

High-heat roasting: Baking at 425°F (220°C) prevents the chicken and vegetables from steaming in their own juices, encouraging better browning and a texture closer to traditional stovetop fajitas.
The acidic finish: Because the dish relies on a salt-free spice blend, adding fresh lime juice right at the end brightens the flavors and tricks the palate into not missing the sodium.
Smoked paprika: Swapping standard sweet paprika for the smoked variety adds a layer of depth that mimics the char of a restaurant grill.

Common Pitfalls to Avoid

Overcrowding the pan: If the baking sheet is too small, the ingredients will overlap and steam rather than roast. If necessary, divide the mixture between two sheet pans.
Uneven slicing: Cutting the chicken strips or vegetables into varying thicknesses will lead to uneven cooking times. Aim for uniform 1/2-inch strips.
Skipping the lime: Without salt to amplify the spices, the dish relies heavily on the acidity of the lime juice to bring the flavors together. Don’t leave it out.

Variations

Spicy Kick: Add 1/4 to 1/2 teaspoon of cayenne pepper or crushed red pepper flakes to the dry seasoning mix before tossing it with the chicken.
Steak Fajitas: Swap the chicken breasts for 1 1/2 pounds of sliced flank or skirt steak. Keep the cooking temperature the same, but check for doneness around the 12-minute mark to prevent the beef from drying out.

Nutritional values are approximate, based on standard reference data (USDA FoodData Central). Actual values vary by brand and exact measurements. For precision, use a tracker like MyFitnessPal or Cronometer.

Nutrition

Serving Size: About 1 1/2 cups of filling
Calories: 265
Sugar: 5g
Sodium: 120mg
Fat: 9g
Saturated Fat: 1.5g
Carbohydrates: 11g
Fiber: 3g
Protein: 35g