Preheat oven to 250 °F. In a small bowl, stir together salt, pepper, chili powder, paprika, garlic powder, and cumin.
Lay out wings on a few baking sheets with wire racks so they are suspended over the baking sheets. Rub wings liberally with spice rub.
Bake wings for around 4 hours, rotating every hour or so to make sure they are cooking evenly. Check the wings around 3 and a half hours to make sure they aren’t overcooking.
Serve wings immediately with blue cheese dressing and hot sauce if you want. They are great with nothing on them also though.