Preheat your oven to 375°F (190°C).
In a small skillet, heat the olive oil over medium heat and sauté the diced onion and red bell pepper until softened.
In a mixing bowl, combine the cooked shredded chicken breast with the sautéed vegetables, cumin, garlic powder, sea salt, and black pepper.
In a separate small bowl, whisk together the Greek yogurt and salsa verde until a smooth, creamy sauce forms.
Stir 2 tablespoons of the creamy salsa sauce into the chicken mixture to moisten the filling.
Lightly warm the corn tortillas in a dry pan or microwave to make them 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 creamy salsa sauce over the top of the tortillas and sprinkle with the shredded pepper jack cheese.
Bake for 15 minutes until the cheese is melted and the sauce is bubbling.
Garnish with freshly chopped cilantro and serve immediately.