Saute the green red and yellow peppers, mushrooms, onion and garlic in the butter in a large skillet until lightly browned. Add the Country Bob's All Purpose Sauce and brown sugar and mix well. Place the chicken pieces in a single layer in a 9x13 inch baking pan. Spoon the vegetable mixture over the chicken. Bake, covered, at 350 degrees for 45 minutes. Bake, uncovered, for 15 minutes. Serve over pasta or rice.