Preheat the oven to 425° and grease a baking dish.
In a small bowl, mix the garlic powder, onion powder, paprika, and cumin together
Season the chicken with salt and pepper and then coat with the spice mixture.
Heat the olive oil in a pan on medium, and once hot, add the chicken.
Cook undisturbed for 4-5 minutes and then flip. (Should be nice and golden brown).
Once fully cooked through, remove from the pan and set aside to cool.
As it cools, in the same pan used for the chicken, melt the butter and mix in the flour.
Consistently stir until golden brown, and then slowly mix in the broth.
Once it starts to bubble, remove the heat and add the sour cream, green chilis, salt, and pepper.
Shred the chicken and add to a bowl.
Mix the chicken with 1 cup of the shredded cheese.
If using a corn tortilla, heat each one in a pan for 10-20 seconds so they become pliable
Roll a little chicken mixture into the tortilla, and add to the baking dish.
Cover in the sauce, top with the cheese, and bake for 20-25 minutes!
The cheese should be golden brown, and the tortillas a little crispy on the edges.
Enjoy!