This chicken spaghetti is always popular, and it's so easy to prepare for your family. This also makes a great potluck or party dish. Feel free to make some changes depending on what you have in your pantry. Cream of chicken soup or cream of celery soup can be substituted for the cream of mushroom soup. Or use roasted red bell peppers instead of the pimentos. Prefer homemade? Use 1 1/2 cups of medium white sauce to replace the condensed soup, and replace the velveeta cheese with mild or sharp cheddar cheese or a cheddar jack blend.