Mix first 6 ingredients in shallow dish. Reserve 2 tablespoons. Coat chicken evenly with remaining flour mixture.
Heat oil in large skillet on medium-high heat. Add chicken; cook 3 minutes per side or until browned. Remove chicken from skillet. Add onion and bell pepper to skillet; cook and stir 5 minutes or until tender-crisp.
Stir in tomatoes, broth and reserved flour mixture. Bring to boil, stirring frequently. Return chicken to skillet. Reduce heat to low; cover and simmer 10 minutes or until chicken is cooked through.