Carefully cut the peeled sweet potato into six- ¼" thin slices, and lay them out on a rimmed baking sheet. Spread them out so they aren't touching.
Drizzle the sweet potatoes with a little olive oil, salt and pepper. Coat all sides evenly.
Roast the sweet potatoes for 30-40 minutes total, flipping them over at 15-20 minutes. You want the edges to be slightly black and crispy, not soggy.
Meanwhile, coat the chicken breasts in a mixture of Franks Red Hot Sauce and melted butter and sprinkle with salt and pepper. You can roast the chicken in the oven with the sweet potatoes when you flip them, for 15-20 minutes until cooked through.
To make the paleo ranch dressing, combine paleo mayonnaise, onion power, garlic powder, fresh dill, and a pinch of salt and pepper.
To assemble, top a sweet potato bun with lettuce, ranch sauce, tomato, and onion and chicken. Feel free to drizzle more hot sauce on the chicken!
Tip: to keep the sweet potato buns firm and crispy, layer the sandwich so the ranch and tomato are not directly touching the buns.
Recipe by Ally's Cooking at https://allyscooking.com/2017/06/13/paleo-sweet-potato-buns/