In a large mixing bowl, combine the shredded chicken, cream cheese, sour cream, 1/2 cup of Monterey Jack cheese, green onions, garlic powder, onion powder, salt, and pepper. Mix until well combined.
Take a flour tortilla and spoon about 1/4 cup of the chicken mixture into the center. Roll the tortilla tightly and place it seam-side down in a greased 9x13 inch baking dish. Repeat with the remaining tortillas.
Once all the tortillas are in the dish, pour the green enchilada sauce evenly over them.
Sprinkle the remaining Monterey Jack cheese over the top of the enchiladas.
Cover the baking dish with aluminum foil and bake for 20 minutes.
Remove the foil and bake for an additional 10 minutes, or until the cheese is bubbly and golden.
Once out of the oven, let cool for a few minutes, garnish with fresh cilantro, and serve hot.