Boil 1 large chicken. Save broth to cook spaghetti in (12 ounce package). Dice chicken when cool. In large skillet, using 1 stick butter, saute 1 large onion (diced), 1 bell pepper (diced), and 5 celery stalks. Add 1 can stewed tomatoes, 1 can Rotel tomatoes, and 1 small jar pimento.
In microwave, melt 1 pound Velveeta cheese (I use hot Mexican) and 1 can cream of chicken soup.
Add all together. Add salt, pepper, and garlic powder to taste. Bake at 350 degrees until hot and bubbly.