Preheat the oven to 190 degrees Celsius (375 degrees Fahrenheit) and lightly grease a 9x13 inch baking dish.
In a large mixing bowl, combine the shredded chicken, diced onion, diced bell pepper, chili powder, garlic powder, salt, pepper, and 100g of the Greek yogurt.
Stir in 50ml of the enchilada sauce to the chicken mixture to ensure moisture.
Lay each tortilla flat and distribute the chicken filling evenly down the center of each.
Roll the tortillas tightly and place them seam-side down in the prepared baking dish.
In a separate small bowl, whisk together the remaining enchilada sauce and the remaining 100g of Greek yogurt until smooth.
Pour the creamy chili sauce over the arranged enchiladas, ensuring full coverage.
Top with the shredded cheese and bake for 25 minutes until the cheese is melted and the sauce is bubbling.
Allow to rest for 5 minutes before serving.