- In a frying pan, add olive oil, and brown the chicken sausage over medium high heat. It isn't necessary to cook it all the way. 
- Add the chicken sausage, tomato puree, tomatoes, and spices to a crock pot. Cook over low heat for 2 hours, or high heat for 1 hour. 
- Add onion, bell peppers, and olives, and continue cooking for another 1½ hours on low, or 45 minutes on high heat. 
- Preheat oven to 425 degree f. Slice spaghetti squash in half. Clean out the seeds and pulp. 
- In a baking dish, put squash face down, and add ¼ inch of water. Cover tightly with foil, and bake for 1 hour and 20 minutes, or until tender and easily pulls out of the shell.