Remove meat from rotisserie chicken and set aside in refrigerator. Place carcass, wings, and all skin in the Crockpot XL. Add 4 quarts of water. Cut the ends and tips off carrots and add to poty. Cut a half inch slice off each end of unpeeled onion, and add to pot. Cut about 3 inches off the root end of celery, and add to pot. Add thyme leaves and bay leaves to pot. Sealed ther Crockpot XL and choose “Soup/Broth” setting. Press start button.