1. Preheat the oven to 375 degrees F.
2. Heat the oil in a large skillet over medium-high heat. Add the sausage and cook until brown. Add the eggplant, salt, cayenne, and black pepper. Saute for 2 to 3 minutes, or until slightly soft. Add the onions, bell peppers, and celery and saute for 2 to 3 minutes, or until slightly wilted. Add the thyme, oregano, and garlic. Stir and cook for about 1 minute. Add the chicken stock and parsley and cook for about 3 minutes, stirring. Remove from the heat and add the bread crumbs and cheese. Mix well.
3. Spoon into a casserole dish and bake for about 45 minutes, or until bubbly and golden brown.
4. Serve hot.