1. Season chicken with 1/2 tablespoon chile powder, salt and pepper. Heat oil in a large skillet over medium high heat and saute seasoned chicken for 3 to 4 minutes, or until no longer pink. Remove from skillet with a slotted spoon and keep warm.
2. In same skillet, stir fry bell pepper and onion until soft. Add jalapeno peppers, tomatoes, remaining 1/2 tablespoon chile powder and hot pepper sauce. Cook, stirring, for an additional 3 to 5 minutes; add chicken and stir fry for 2 minutes more.