- Preheat your oven to 350ºF. 
- Grease a 9x13-inch baking pan with cooking spray. 
- In a large bowl, mix together the cooked shredded chicken, ranch dressing, 1 cup of shredded cheddar cheese, and crumbled bacon. 
- Divide the chicken mixture evenly among the tortillas, placing it in the center of each one. 
- Roll up the tortillas and place them seam-side down in the prepared baking dish. 
- In a small saucepan over medium heat, melt the butter. 
- Stir in the flour and cook for 1 minute. 
- Gradually whisk in the chicken broth until the sauce is smooth and thickened. 
- Remove from heat and stir in the sour cream, taco seasoning, and green chilies. 
- Pour the sauce over the enchiladas. 
- Sprinkle the remaining cheese on top. 
- Bake in the preheated oven for 20-25 minutes. 
- Broil for a few minutes to brown the cheese.