spray a small 11x7 in pan with pam -- preheat oven to 350 degrees.
spread 1/4 cup of pesto sauce all over each chicken breast, add tomato, mushrooms, cheese, italian seasoning, sprinkle of red pepper flakes and onion. Roll each chicken breast and secure with toothpicks. Place chicken in pan and cover with pasta sauce -- cover with foil and bake until juices run clear -- about 30-45 minutes depending on the size of your chicken breast -- bake another 5 mins with the foil removed -- may sprinkle with parmesean cheese. Serve over hot pasta with a salad and crusty french bread -- Enjoy!