Preheat oven to 350F degrees. Coat 8x4 loaf pan with cooking spray.
Heat oil in large skillet, saute onion green pepper, and garlic for 3 min. Allow mixture to cool.
Combine onion mixture, bread crumbs, Italian seasoning, ketchup, and egg . Stir in chicken.
Pack half chicken mixture in pan. Top with cheese. Top with remaining chicken.
Bake for 35 minutes.
Combine ketchup, sugar, and mustard. Stir well.
Spread over meatloaf and bake 5 additional minutes.
Let stand 10 minutes and serve.
Modified from Weight Watchers