Heat the oven to 400F. Line two baking sheets with parchment paper and set aside.
Using a mandoline, slice the potatoes as thinly as possible. Transfer to a large bowl and toss in olive oil. Once thoroughly coated, toss potatoes in ½ of the wasabi/ginger powder.
Place on the baking sheets in a single layer.
Bake for 18-24 minutes, flipping once after 10 minutes. Keep a close eye on them once the potatoes have been in the oven for 18 minutes and removing the chips as ready.
Sprinkle the hot chips with the remaining wasabi powder and transfer to baking rack to cool completely.