Preheat the Oven: Preheat the oven to 350°F, with a rack fitted in the center.
Prep the Tortillas: Using a pizza cutter, slice the 6 (6-inch) corn tortillas into roughly 1-inch strips and set aside.
6 (6-inch) corn tortillas
Sauté the Veggies: In a large oven-safe skillet, heat the avocado oil or olive oil over medium heat until glistening. Add the onion and bell pepper and cook, stirring occasionally, until the onions are translucent and the peppers have softened, about 5 minutes.
2 tablespoons avocado oil or olive oil, 1 small yellow onion, 1 bell pepper
Add the Chicken and Sauce: Add the shredded chicken, taco seasoning, diced green chilies, black beans, and enchilada sauce to the skillet. Stir well to combine. Add the tortilla strips, gently mixing to separate them as best you can. Bring the mixture to a boil over high heat, then reduce to a simmer. Cook until the tortillas soften, about 2 minutes. Turn off the heat.
4 cups cooked shredded chicken, 1 tablespoon taco seasoning, 1 (4-ounce) can diced green chilies, 2 (15-ounce) jar or can red enchilada sauce, 1 (15-ounce) can black beans
Bake: Sprinkle the shredded cheese evenly over the top. Transfer the skillet to the oven and bake on the center rack until the cheese is melted and the sauce is bubbling, about 16–18 minutes.
2 cups shredded Mexican blend cheese
Serve: Top with green onions, avocado, cilantro, sour cream, diced tomatoes, hot sauce, and lime wedges, if desired. Serve hot and enjoy!
1/4 cup sliced green onions, Avocado, Cilantro, Sour Cream, Diced Tomatoes, Hot Sauce, Lime Wedges