There is no resisting this cheesy-pleasey gluten-free chicken enchilada pie recipe, which is simple to make and even easier to devour. This recipe calls for cooked chicken, preferably rotisserie, so plan accordingly.
Preheat the oven to 350°F. Set aside ¼ cup each of the cheddar and jack cheeses. In a bowl, mix together the chicken, the remaining cheddar and jack cheeses, and sour cream. Season to taste with salt and pepper.
Pour 1/3 cup of the salsa into the bottom of an 8-inch ovenproof skillet or baking dish. Cover with 1 tortilla, one-third of the chicken mixture, and 1/3 cup salsa. Repeat layers of tortilla, chicken mixture, and salsa until there are three layers. Top with the remaining tortilla, 1/3 cup salsa, the reserved cheeses, and the sliced olives and tomatillo.
Cover with aluminum foil and bake until bubbling, 20 to 25 minutes. Remove the foil and bake 5 minutes longer. Serve with more salsa verde.