Preheat oven to 350°F and spray a 9x13-inch baking dish with cooking spray.
In a large bowl, mix together shredded chicken, cream cheese, sour cream, green chiles, 1 cup of shredded cheese, cumin, garlic powder, salt, and pepper until well combined.
Pour 1/2 cup of enchilada sauce in the bottom of the prepared baking dish and spread evenly.
Divide chicken mixture among tortillas, roll up tightly, and place seam-side down in the baking dish.
Pour remaining enchilada sauce over the top of the rolled enchiladas, sprinkle with remaining 1 cup of cheese, and bake for 25 minutes until bubbly and cheese is melted.
Let stand for 5 minutes before serving with desired toppings like cilantro, avocado, or additional sour cream.