Prep: 1. Chop bell peppers. 2. Slice onions, garlic, and basil. 3. Halve tomatoes. For pepper mixture: 1. Heat oil in a large pan over medium heat. 2. Add bell peppers and cook 3 minutes, stirring occasionally. 3. Add onion and garlic; cook 10 minutes, stirring occasionally. 4. Add tomatoes; cook 1 minute or until they wilt. 5. Remove from heat; stir in basil, vinegar, and 1/4 teaspoon salt. While pepper mixture cooks: 1. Season chicken to taste with salt and pepper. 2. Dredge in flour; shake off excess. 3. Melt butter in a large pan over medium-high heat and add chicken; cook 2 minutes each side or until golden and done. Serve: Chicken with bell pepper mixture alongside or on top.