Heat the olive oil in a large skillet over medium heat. Add the onion and bell pepper, and cook until softened, about 5 minutes. Add the garlic, cumin, chili powder, oregano, salt, and pepper, and cook for 1 minute.
Stir in the tomatoes, black beans, green chiles, olives, chicken, and broth. Cook for 10 minutes, or until heated through.
Spoon about 1/3 cup of the chicken mixture into each of the 12 corn tortillas. Roll up the tortillas and place them seam side down in a 9x13 inch baking dish.
Sprinkle the Cheddar cheese over the top of the enchiladas. Bake at 375 degrees F (190 degrees C) for 20 minutes, or until cheese is melted and bubbly.
Top each enchilada with a dollop of sour cream and serve.
Interesting Facts
Enchiladas are a traditional Mexican dish made from corn tortillas filled with a variety of ingredients such as cheese, vegetables, meat, and beans.
New Mexico style enchiladas typically feature red or green chili sauce and Cheddar cheese.
Enchiladas are traditionally served with sides of rice and beans.