Combine first 5 ingredients in a large zip-top plastic bag; add chicken. Seal bag, and shake to coat.
Heat oil in a large nonstick skillet coated with cooking spray over medium-high heat. Add chicken; cook 5 minutes or until browned, turning once. Add pepper stir-fry and remaining ingredients; cover and cook 8 minutes.
Uncover and cook 3 minutes or until thick. Discard bay leaf.