Chicken Tetrazzini - With greens

1 (7 ounce) package spaghetti , uncooked 1 tablespoon reduced-calorie margarine 1 cup fresh mushrooms , sliced 1 cup onion , chopped 1 cup green pepper ,[...]

4 -5 cups cooked chicken, cut into large bite-size pieces (I use meat from 3-5 pound fryer, boiled, skinned, deboned and drained) 1 (8 ounce) package[...]

2 lbs chicken breasts (Cooked & Cubed) 1 quart chicken broth (Canned) 1 (12 ounce) package linguine or 1 (12 ounce) package spaghetti noodles 1 medium onion[...]

1 (16 ounce) package spaghetti 1 1/4 cups chopped onions 3 tablespoons margarine 1 cup chopped green pepper 5 1/2 cups cooked diced chicken 4 cups grated[...]