Directions: Season chicken with pinch of salt, garlic powder, oregano, 1/8 tsp of the chili powder and 1/8th tsp cumin. Add the beans and tomatoes to the crock pot and season with the remaining chili powder and cumin. Place chicken in the crock pot and cover. Cook on HIGH 2 hours. Meanwhile, combine shredded cabbage with vinegar (add more to taste), season with salt to taste; set aside.Remove chicken from the crock pot and shred with two forks. Drain beans and transfer to a platter, or back to the crock pot to keep warm. Top with shredded chicken, scallions and cilantro. To serve, warm the taco shells according to package directions. Fill with equal amounts of bean and chicken mixture. Top with cabbage and your favorite toppings.