Preheat your oven to 375°F (190°C) and lightly grease a small baking dish.
Season the chicken breast with chili powder, sea salt, and black pepper on both sides.
Heat the olive oil in a skillet over medium heat and cook the chicken until the internal temperature reaches 165°F, then remove and shred with two forks.
In a mixing bowl, combine the shredded chicken with the lime juice, plain Greek yogurt, and finely diced red onion.
Lightly warm the corn tortillas in a dry pan or microwave to make them pliable.
Dip each tortilla into the red enchilada sauce to coat both sides, then place a portion of the chicken mixture in the center and roll tightly.
Arrange the rolled tortillas in the baking dish, seam-side down, and pour any remaining enchilada sauce over the top.
Sprinkle the Monterey Jack cheese evenly over the enchiladas.
Bake for 15 minutes until the sauce is bubbling and the cheese has melted into a golden crust.
Garnish with fresh cilantro and serve immediately.