Cook the hamburger in a large skillet over medium heat until browned. Stir in the onions, green chiles and taco seasoning and cook for 3 minutes. Stir in enchilada sauce and chicken broth and bring to a boil. Then stir in the noodles and bring the heat to low. Stir and then cover. Cook for 10-12 minutes, or until the noodles are cooked. Stir halfway through to prevent the noodles from sticking.