01 - Preheat oven to 375°F. Grease a 9x13-inch baking dish with cooking spray or a small amount of oil.
02 - In a skillet over medium heat, warm olive oil. Add onion and sauté 3–4 minutes until translucent. Stir in garlic, cumin, and oregano; cook 1 minute until fragrant.
03 - Add shredded chicken, salt, and pepper to the skillet. Mix well to combine with the seasoned aromatics and cook for 2 minutes to heat through. Remove from heat.
04 - In a small bowl, combine green enchilada sauce with chopped cilantro and lime juice. Stir until well incorporated.
05 - Wrap corn tortillas in a damp paper towel and microwave for 45 seconds. This softens them, making them pliable for rolling without cracking.
06 - Spread 1/2 cup of the green sauce mixture evenly over the bottom of the greased baking dish to prevent sticking.
07 - Place approximately 2 tablespoons of the seasoned chicken mixture along the center of each softened tortilla. Sprinkle a small portion of cheese over the filling.
08 - Roll each tortilla tightly around the filling and place seam-side down in the prepared baking dish, arranging them in a single row.
09 - Pour the remaining green sauce evenly over all the enchiladas. Sprinkle the remaining Monterey Jack cheese across the top.
10 - Bake uncovered for 25–30 minutes until the cheese is fully melted and bubbly, and the edges are lightly golden.
11 - Let enchiladas cool for 5 minutes to set. Serve warm, topped with sour cream, diced avocado, and extra fresh cilantro.