Preheat your oven to 375°F, ensuring the rack is in the center position.
In a large mixing bowl, combine the taco seasoning, lime juice, and olive oil. Add the chicken, bell peppers, and onion, tossing everything thoroughly to coat the ingredients evenly. Spread the mixture across a rimmed sheet pan.
Roast in the preheated oven for 15 to 20 minutes, or until the chicken reaches full doneness. For added texture, you may switch the oven to broil for the final 3 minutes to achieve a light char on the chicken.
To serve, distribute rice into six bowls. Top each with the roasted chicken, bell peppers, onions, and desired accompaniments such as beans, guacamole, sour cream, pico de gallo, cilantro, and lime wedges.