Mexican Chicken Casserole

I got this recipe from a friend about a month ago and have already made it several times. It's really good, you should try it :)

2 cups cooked chicken
1 can cream of chicken soup
1 can cream of mushroom soup
4 oz can of diced green chiles
1 small onion (diced)
half a bag Frito corn chips
grated cheese
sliced black olives (optional)

Mix soups, onion and chiles with half a soup can of water. Grease casserole dish. Crush Fritos a little and layer chips, chicken, olives and cheese. Add half of the soup mixture. Add another layer and top with more Fritos and cheese. Bake, uncovered for 30 minutes.

(I use an already cooked whole chicken from the grocery store which makes this quick and easy. You can also adjust some of the ingredients to your preference)