Preheat oven to 350°F and lightly grease a 9x13 baking dish.
In a bowl, mix shredded chicken, sour cream, cheese, garlic powder, onion powder, cumin, salt, and pepper.
Fill each tortilla with the chicken mixture, roll tightly, and place seam-side down in the baking dish.
In a skillet, melt butter and cook garlic for 1 minute.
Whisk in flour to form a roux, cooking 1 minute more.
Slowly stir in chicken broth and cream, whisking until thickened.
Add cheese, salt, and pepper, stirring until the queso sauce is smooth and creamy.
Pour the sauce evenly over the enchiladas.
Bake 20–25 minutes, until hot and bubbly.
Garnish with cilantro, jalapeños, or extra cheese.
