Heat remaining 2 Tablespoons olive oil and cook onions and peppers for about 5 minutes, then add garlic and saute 30 seconds longer. Pour in diced tomatoes, tomato sauce, tomato soup, beef broth, Parmesan cheese, all remaining spices and cooked meat. Season to taste with salt and pepper. Bring just to a light boil, then reduce heat to low, cover and simmer, stirring occasionally, 30 minutes.