Preheat oven to 350° F.
Whisk together the sour cream, minced onion, diced green chillies, chicken broth, garlic powder, salt and chili powder until there are no more lumps.
Measure your shredded chicken into a medium sized bowl.
Pour approximately 1/3 of the sauce onto the shredded chicken. Stir to coat the chicken.
Add 1/2 cup of shredded cheese to the chicken mixture and stir to combine.
Spread a small amount of sauce in the bottom of a 9x9 pan.
Divide the shredded chicken mixture among the 8 tortillas, spooning the mixture into a line in the center of the tortilla.
Roll up the tortilla and place in the pan. Repeat with remaining tortillas.
Pour the remaining sauce over the top of the tortillas, making sure to spread the sauce into the cracks in between the tortillas.
Top with the remaining 1/2 cup of cheese.
Cover with aluminum foil and bake at 350° for 30 minutes. Remove the foil and bake for an additional 10 minutes.
Enjoy!