Add chicken breasts, black beans, corn, green chiles, chicken broth, tomato soup, white onions, and rotel to slow cooker. Mix spices in a small bowl and add to slow cooker. Cook on high 4 hours or low 8 hours.
Minutes before serving, shred chicken breasts with two forks, then allow to cook 30 minutes longer. Taste and add salt and pepper to taste.
Fill tortillas with chicken mixture and top with diced avocados. Serve with lime wedges and garnish with tomatoes, onions, and additional cilantro if desired. Enjoy!
Notes
Add your favorite taco toppings - like salsa, shredded cheese, roasted corn, or guacamole.