Crockpot Cheesy Chicken Spaghetti

16oz spaghetti noodles
1 lb. velveeta cheese
2 cups cooked, chopped chicken
1 can cream of mushroom soup
1 can cream of chicken soup
1 can petite diced tomotoes
1 4 oz can mild green chilies
4 oz can mushrooms stems and pieces, drained
1 small onion, diced (or less to taste)
salt and pepper to taste

Thaw. Combine all ingredients in crock pot except noodles. Cook on Low 2-3 hours.
Cook noodles and add in the last 1/2 hour.