Preheat the Oven: Preheat your oven to 180°C (350°F). Lightly grease a baking dish.
Cook the Filling: Heat olive oil in a pan over medium heat. Add onion, garlic, and bell pepper; sauté until softened, about 4–5 minutes.
Add Chicken & Spices: Stir in the shredded chicken, cumin, smoked paprika, chili powder, cayenne, oregano, salt, and pepper. Mix well to coat.
Add Sauce: Pour in half of the chopped tomatoes or enchilada sauce. Stir and simmer for 5 minutes until slightly thickened.
Prepare Tortillas: Warm tortillas slightly to make them easier to roll.
Assemble Enchiladas: Spoon chicken mixture into each tortilla, sprinkle with a little cheese, roll tightly, and place seam-side down into the baking dish
Top with Sauce & Cheese: Pour the remaining sauce over the enchiladas and sprinkle generously with the remaining cheese.
Bake: Bake for 20–25 minutes, or until the cheese is melted and bubbly.
Serve: Garnish with fresh coriander/cilantro and serve with sour cream and lime wedges if desired.