In a large mixing bowl, combine the shredded chicken, softened cream cheese, green chilies, garlic powder, ground cumin, and Monterey Jack cheese. Season with salt and black pepper to taste. Mix everything thoroughly until well combined.
Preheat your oven to 350°F (175°C). Take a tortilla and spoon a generous amount of the chicken mixture into the center. Roll the tortilla tightly around the filling and place it seam-side down in a greased 9x13-inch baking dish. Repeat this process for all tortillas, arranging them snugly in the dish.
Once all the enchiladas are in the dish, pour the red enchilada sauce evenly over the top. Make sure to cover all the tortillas so they stay moist during baking.
Sprinkle the Mexican blend cheese (or cheddar cheese) evenly over the enchiladas, ensuring they’re well-covered for that cheesy goodness.
Place the baking dish in the preheated oven and bake for 20-25 minutes, or until the cheese is melted and bubbly and the edges of the tortillas are lightly golden.
Once baked, remove the enchiladas from the oven and let them cool for a few minutes. Top with diced red onion, chopped cilantro, and finely chopped tomatoes before serving. Enjoy your Easy Chicken Enchiladas hot and fresh!