Larry simplified this even further: Mix the noodles, chicken and sauce together
Spoon half in the casserole dish, cover with half the cheese, spoon in the other half, cover with the rest of the cheese. No need to layer noodles & chicken separately, then sauce, then cheese.
Also we made this batch with Fat-free, low-sodium "cream of chicken" soup. It works, but the flavor is a bit flat. I think the original full-frontal sodium attack on innocent taste buds causes a numbing effect.