"There is no 'normal' way for a desert dweller to look," was his answer. "Most people that live in the dune seas are either poor settlers or slaves and thus tend to cling to their people's habits."
He paused; maybe for dramatic effect, maybe only to let his suit take a breath for him.
"The only people that were native to Tatooine are the Tusken, who never show any shred of skin. Not even to safe their lives." He does not mention the theories that the Tusken were as alien to Tatooine's environment as any other life on the planet.