Season the chicken: Pat chicken dry and cut into bite-size pieces. Toss with 1 teaspoon salt, 1 teaspoon chili powder, 1 teaspoon cumin, 1/2 teaspoon smoked paprika, 1/2 teaspoon garlic powder, and a pinch of black pepper.
Sear the chicken: Heat 1 tablespoon oil in a large oven-safe skillet over medium-high.
Add chicken in a single layer. Cook 5–7 minutes, stirring once or twice, until browned and just cooked through. Transfer to a plate.
Sauté aromatics: Add a little more oil if needed.
Lower heat to medium. Cook diced onion and bell pepper with a pinch of salt for 4–5 minutes until softened. Stir in minced garlic and cook 30 seconds until fragrant.
Build the sauce: Pour in enchilada sauce.
Stir in black beans, corn, and drained tomatoes with green chiles if using. Bring to a gentle simmer.
Add tortillas: Stir in the tortilla strips. Let them soften for 2–3 minutes; they’ll thicken the sauce slightly and give that enchilada texture.
Stir in protein boost: Reduce heat to low.
Fold in cottage cheese or Greek yogurt until smooth and creamy. Avoid boiling after this step to prevent curdling.
Return chicken and melt cheese: Add the seared chicken back to the skillet. Sprinkle shredded cheese over the top.
Cover and cook on low 2–3 minutes until the cheese melts. If your skillet is oven-safe, you can broil uncovered for 1–2 minutes for a bubbly top.
Finish and serve: Remove from heat. Top with chopped cilantro and a squeeze of lime.
Add any favorite toppings. Serve hot straight from the skillet.