Sprinkle chicken evenly with half of the chili powder and salt and pepper to taste. Heat the oil in a large skillet over medium-high heat.
Add seasoned chicken and sauté for 3 to 4 minutes or until no longer pink. Remove from skillet and keep warm. In the same skillet, stir-fry bell pepper and onion until soft, about 5-7 minutes.
Add jalapenos, tomatoes, remaining chili powder and the hot pepper sauce. Cook and stir for 3 to 5 minutes. Add cooked chicken and stir-fry for 2 minutes. Serve and enjoy!!!