Heat avocado oil in a skillet, then add ground turkey with cumin, salt, and pepper. Cook until no longer pink, breaking it into crumbles. Remove and set aside.
Add onion and bell pepper to the skillet, sautéing until tender, about 3 minutes. This step brings out the sweetness and aroma of the vegetables.
Return the cooked turkey to the skillet and add black beans, diced chiles, corn, and enchilada sauce. Bring to a boil, then reduce heat to low.
Mix in tortilla slices and sprinkle shredded cheese on top. Let it melt over low heat for a gooey, cheesy finish.
Spoon the skillet mixture into bowls and garnish with avocado, cilantro, queso fresco, or sour cream. Enjoy immediately.