Mix flour, paprika, minced garlic, salt, thyme and black pepper in small bowl. Coat chicken with 2 tablespoons of the seasoned flour.
Heat oil in large skillet on medium-high heat. Add chicken; cook 3 minutes per side or until browned. Remove from skillet. Add bell pepper and onion; cook and stir 5 minutes or until tender.
Stir in tomatoes, broth and remaining seasoned flour. Bring to boil, stirring frequently. Stir in red pepper, if desired. Return chicken to skillet. Reduce heat to low; cover and simmer 10 minutes or until chicken is cooked through.