In a large mixing bowl, combine the shredded chicken, softened cream cheese, sour cream, half of the Monterey Jack cheese, chopped onion, minced garlic, cumin, and chili powder. Mix well until the ingredients are fully integrated.
Pour half of the green enchilada sauce into the bottom of a large baking dish, spreading it evenly.
Spoon about ⅓ cup of the chicken mixture into the center of each tortilla. Roll them up tightly and place seam-side down in the baking dish.
Once all the tortillas are filled and placed in the dish, pour the remaining green enchilada sauce over the top. Sprinkle with the remaining Monterey Jack cheese.
Bake in the preheated oven for 25-30 minutes, or until the cheese is bubbly and golden.
Remove from the oven and let cool for a few minutes before serving. Garnish with fresh cilantro and jalapeño slices if desired.
Notes
Garnish with fresh cilantro and jalapeños for added flavor.