Preheat oven to 325 degrees
In a pot, saute onion and bell pepper in butter, until they are soft.
Add minced garlic, cumin, chili powder, and oregano to pot, cook and stir for one minute.
Stir in cream of mushroom soup, cream of chicken soup, rotel, and chicken broth into the onion pot.
Fold chicken into soup mix pot.
Spray a 9x13" pan with non stick spray.
one third of the tortillas pieces
one third meat mixture
one third cheese
Repeat two more times. The top layer should be cheese.
Bake 30 - 40 minutes