Preheat the oven to 375°F and set out a 9×13 baking dish.
Spread a thin layer of green enchilada sauce across the bottom of the dish.
Add the first layer of tortillas
Add a block of cream cheese to the middle of the pan, then add the shredded chicken, green chilies, enchilada sauce, chicken broth, half of the cheese mixture, greek yogurt and seasonings around the block of cream cheese.
Cover dish tightly with foil and bake 35 minutes.
Remove the casserole from the oven and Break apart the cream cheese with a spoon or spatula. Stir everything together until the filling becomes creamy and evenly combined.
Scoop half of the creamy mixture into a bowl and set aside.
Add a layer of the remaining tortilla pieces to the pan.
Spread half of the creamy filling over the tortillas.
Add another layer of tortillas.
Spread the remaining filling over the top. Sprinkle the remaining mozzarella and cheddar cheeses evenly over the casserole Increase oven temperature to 400°F
Bake uncovered for 10 minutes until the cheese is melted.
Turn the oven to broil and cook 2–3 minutes until bubbly and lightly golden
Remove from the oven and let rest 10–15 minutes before serving.