Very easy to make. This is one of those recipes that you come up with when you haven't been to the grocery in weeks. I cook several pounds of chicken at a time and freeze it so I can make these types of recipes.
Arrange tortillas to cover bottom of pan (3 to 4 tortillas).
Use 1/2 of pre-cooked chicken to lay over bottom layer of tortillas and top chicken with 1/2 of sour cream mixture and then lightly sprinkle with both types of cheese.
Cover layer with tortillas (3 to 4).
Use the remaining 1/2 of the pre-cooked chicken to layer on top of the tortillas and then top chicken with remaining sour cream mixture and then lightly sprinkle with both types of cheese.
Top middle layer with tortillas (3- 4) and cover with remaining cheeses.