Put 1 whole chicken, chopped celery and onion in water in large pot and boil until cooked thoroughly. Remove chicken and when cool, pick meat off of bones. Leave chicken broth in pot.
Cook in same pot (with chicken broth, celery and onions) 10 - 12 oz. of spaghetti.
Drain water leaving approximately 1-1/2 to 2 cups. Add chicken, 1 cup of Cream of Mushroom Soup, 1 can Tomato Sauce, Garlic Salt, Salt and Pepper. Stir together, put in casserole dish and sprinkle crushed potato chips on top. Bake at 400 degrees until bubbly.
This is kind of just off of the top of my head. I don't really have a "receipe".