Preheat your oven to 375°F (190°C).
Poach the chicken breast in simmering water for 12-15 minutes until fully cooked, then shred with two forks.
Heat the olive oil in a skillet over medium heat and sauté the diced bell pepper and red onion until softened.
In a small bowl, toss the shredded chicken with the sautéed vegetables, sea salt, black pepper, chili powder, and cumin.
Warm the corn tortillas in a dry pan for 30 seconds per side to make them pliable.
Spread 2 tablespoons of the red enchilada sauce in the bottom of a small baking dish.
Divide the chicken mixture between the two tortillas, roll them up tightly, and place them seam-side down in the dish.
Pour the remaining enchilada sauce over the top and sprinkle with the shredded cheddar cheese.
Bake for 15 minutes until the sauce is bubbling and the cheese has melted.
Garnish with fresh cilantro before serving.