In a large bowl mix all of your spices, spaghetti sauce, chopped yellow onions, garlic, and sliced zucchini’s.
Place your chicken breasts in your crock and pour your sauce & vegetable mixture over the chicken breasts.
Spread the chopped green onions over the mixture. Cook on LOW for 6 to 8 hours or on HIGH for 5 hours. Check the internal temp (165 degrees) of your chicken before serving with a meat thermometer. Cook the pasta on the stove as you are finished cooking the chicken in the crock. Once the chicken is cooked through cover with the cheese you’ve picked and let it sit, covered, in the slow cooker for a few minutes to let it melt.
Serve alone or over pasta or noodles that have been cooked on the stove top according to the package directions and enjoy!