In a large mixing bowl, combine chicken, salsa, chili powder, cumin, garlic powder, onion powder, and salt.
Spread evenly down the center of each tortilla, roll up tightly, and place in a 9 x 13 baking dish.
In a small blender or food processer, blend cream cheese, sour cream, green chiles, minced garlic, chicken broth, chili powder, cumin and salt until smooth.
Pour evenly over tortillas in baking dish.
Sprinkle with cheese.
Cover with foil and bake at 350 degrees for 35 minutes.
Remove foil and bake for another 5 minutes or until cheese is bubbly.
Serve with additional sour cream or prepared guacamole.