Preheat your oven to 350°F (175°C).
In a bowl, mix the shredded chicken with garlic powder, onion powder, salt, and pepper.
In a separate bowl, combine sour cream and cream of mushroom soup until smooth.
Heat the tortillas in a skillet until soft and pliable.
Spread a spoonful of the chicken mixture on each tortilla.
Roll up the tortillas and place them seam-side down in a greased baking dish.
Pour the white sauce mixture over the rolled enchiladas.
Sprinkle shredded Monterey Jack cheese on top.
Bake in the preheated oven for 20-25 minutes, or until bubbly and golden.
Garnish with fresh cilantro before serving.