Put your chicken, onion, garlic and broth in your crock pot
Cover and cook on high for 4 hours, until chicken is tender and done (check with meat thermometer)
When your chicken is done, remove it from your crock pot and shred with two forks or your mixer
Pour 1/2 cup of the cooking juices into a measuring cup and discard the rest
Put your chicken, 1/2 cup cooking juices and hot sauce in your crock pot and mix well
Cover and cook on high for another 1/2 hour
While your chicken is cooking, cut your baked baking potatoes in half (scooping out the potato pulp to use for another recipe), place the skins on your baking sheet and sprinkle with salt and pepper
Bake the skins at 450 for 10 mins until they are lightly golden
Fill your potato skins with your chicken mixture, sprinkle cheese on top and bake on 450 for a few minutes, until the cheese is melted
Drizzle with ranch or blue cheese dressing, if desired, before serving