Preheat oven to 425 degrees. Cut each potato lengthwise into 8 wedges; halve long wedges crosswise.
On a large rimmed baking sheet lined with parchment paper, toss potatoes with oil, sugar, chili powder, 1 teaspoon coarse salt, and 1/4 teaspoon ground pepper, until coated. Arrange wedges, cut sides down.
Roast potatoes until browned and tender, 15 to 20 minutes. Season with additional salt, if desired, before serving.
Loved this simple recipe. Spice level just right. Took closer to 40 minutes to get a good texture on these, though.