Preheat your oven to 400°F (200°C). Prepare your baking sheet with parchment paper.

In a large mixing bowl, combine the sliced chicken, bell peppers, and onion. Drizzle with olive oil, then sprinkle taco seasoning, salt, and pepper. Toss to coat evenly.

Transfer the mixture to the prepared baking sheet and spread in an even layer.

Bake for 25-30 minutes, stirring halfway through, until chicken is cooked and veggies are tender.

Let the mixture cool for a couple of minutes. Prepare tortillas and toppings while cooling.

Warm tortillas slightly, then spoon the roasted mixture into each tortilla and add toppings. Serve with a squeeze of lime juice.