01 - Preheat oven to 400°F. Lightly grease a baking dish with olive oil or cooking spray.
02 - In a small bowl, combine the chili powder, smoked paprika, cumin, garlic powder, onion powder, salt, and black pepper. Mix well and set aside.
03 - Place each chicken breast between two sheets of plastic wrap and pound to an even ⅜-inch thickness using a meat mallet or rolling pin.
04 - Drizzle the flattened chicken breasts with 1 tbsp olive oil, then sprinkle half of the spice blend evenly over both sides of each piece.
05 - Heat the remaining 1 tbsp olive oil in a large skillet over medium heat. Add the sliced red and yellow bell peppers along with the red onion. Sauté for 3 to 4 minutes until just tender. Remove from heat and toss with the remaining spice blend.
06 - Lay each seasoned chicken breast flat. Distribute the sautéed pepper and onion mixture evenly across each piece, then sprinkle with shredded cheese.
07 - Roll each chicken breast up tightly and secure with toothpicks to hold the filling in place. Arrange the rolls seam side down in the prepared baking dish.
08 - Bake for 25 to 30 minutes, or until the chicken is cooked through and the internal temperature reaches 165°F. Juices should run clear when pierced.
09 - Remove from the oven and let rest for 5 minutes. Carefully remove the toothpicks, slice each roll into pinwheels, and serve garnished with fresh cilantro and lime wedges if desired.