Prep the Ingredients: Dice the red bell pepper and zucchini, slice the green onions (separating the white/light green and dark green parts), and cut the tortillas into wedges. This ensures everything is ready to cook.
Cook the Beef: Heat a large skillet over medium-high heat. Add cooking spray and olive oil, then add ground beef. Cook, breaking up the beef until browned, about 5-7 minutes. Drain any excess fat.
Sauté the Vegetables: Add the diced bell pepper, zucchini, and the white/light green parts of the green onions to the skillet. Sauté for about 5 minutes until the vegetables soften.
Add Spices and Sauce: Stir in chili powder, cumin, garlic powder, and oregano. Cook for 1 minute to bring out the flavors, then pour in the enchilada sauce. Stir to combine.
Combine Beans and Corn: Add the black beans and corn. Stir everything to combine evenly. Layer the tortilla wedges over the mixture and press down gently to absorb some of the sauce.
Top with Cheese: Sprinkle 1 cup of shredded cheese over the skillet. Cover with a lid, reduce heat to low, and cook for 10 minutes until cheese is melted. Remove the lid and sprinkle the remaining cheese on top. For a crispy finish, broil for a few minutes until the cheese is golden brown.