01 - Preheat oven to 400°F. Lightly grease a baking dish with cooking spray or olive oil.
02 - In a small bowl, combine the chili powder, smoked paprika, cumin, garlic powder, onion powder, salt, and black pepper. Stir until evenly blended.
03 - Place each chicken breast between two sheets of plastic wrap and pound using a meat mallet or rolling pin to an even 3/8-inch thickness.
04 - Drizzle the pounded chicken with 1 tbsp olive oil and sprinkle both sides of each breast with half of the prepared spice blend.
05 - Heat the remaining 1 tbsp olive oil in a large skillet over medium heat. Sauté the sliced red and yellow bell peppers along with the red onion until just tender, about 3 to 4 minutes. Remove from heat and toss with the remaining spice blend.
06 - Lay each seasoned chicken breast flat. Spread an even layer of the sautéed pepper and onion mixture over the surface, then sprinkle generously 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. The cheese should be melted and the juices should run clear.
09 - Allow the roll ups to rest for 5 minutes before removing the toothpicks. Slice into pinwheels and serve garnished with fresh cilantro and lime wedges if desired.