Cook pasta as directed, drain. Heat oven to 400. Spray a 2-quart casserole dish w/ cooking spray. Heat oil in saucepan over medium heat. Add onion, garlic and red bell pepper. Cook, stirring for 5 mins.
Add tomatoes, ham, broth,and oregano. Bring to boil. Simmer for 3 mins. Remove from heat. Stir in macaroni. Season w/ salt and pepper.
Spoon into baking dish. In small bowl, combine bread crumbs, parmesan cheese and butter. Sprinkle bread crumbs over casserole. Place casserole dish on a baking sheet. Bake 20 mins, or until bubbly.