To a bowl, add chicken, 1 cup of cheese, green chiles, sour cream, and salt and pepper, and stir to combine.
Spray 9 x 13 baking dish with nonstick spray.
To a small pot over the stove add enchilada sauce and bring to a boil.
One by one dip each tortilla in the hot enchilada sauce then fill it with 2-3 tbsp of the chicken mixture, roll it up, and place seam side down in the baking dish. Repeat until the baking dish is full. Pour the rest of the sauce on top and top with remaining cheese.