In a bowl, combine the broth, taco seasoning, parsley, garlic, salt, and pepper. Pour over the roast.
Cover and cook on low for 8-10 hours until tender.
Remove roast from the slow cooker and shred. Remove and reserve liquid from the slow cooker.
Place roast back in the slow cooker and add in 1/4 cup of the reserved liquid along with the refried beans and green chilies. Add in any more reserved liquid if needed. Turn to high and allow to cook until heated through. This will only take about 15 minutes.
Place about 1 cup of filling in the center of each tortilla top with desired toppings. Roll up burrito style and serve. Serves 8.