Place chicken in a 3-qt. slow cooker. In a bowl, combine the broth, tomatoes, tomato sauce, green pepper, onion, garlic and seasonings; pour over chicken. Cover and cook on low for 4-5 hours or until meat is tender. Remove chicken and keep warm.
Pour cooking juices into a large saucepan; skim fat. Combine flour and cold water until smooth; stir into juices. Bring to a boil; cook and stir for 2 minutes or until thickened. Serve with chicken and pasta. If desired, top with Parmesan cheese and basil.
