Preheat your oven to 375°F (190°C).
Poach or pan-sear the chicken breast until fully cooked, then shred it using two forks.
In a mixing bowl, combine the shredded chicken, Greek yogurt, 2 tablespoons of the salsa verde, cumin, garlic powder, sea salt, and black pepper.
Roughly chop the baby spinach and fold it into the chicken mixture.
Warm the corn tortillas in a dry skillet for 30 seconds per side until pliable.
Divide the chicken filling evenly between the two tortillas, roll them up tightly, and place them seam-side down in a small baking dish.
Pour the remaining salsa verde over the top of the tortillas and sprinkle with the cheddar cheese.
Bake for 15-20 minutes until the cheese is melted and the edges are slightly crisp.
Garnish with fresh cilantro before serving.