Line a large baking sheet with aluminum foil. Pour the oil evenly onto the foil. Chop your potatoes into moderately thin wedges. You can then place them into a freezer bag and shake them around with all the salt, seasonings and rice flour, or choose to mix them up on your cutting board.
Put your potatoes into the oil. Place the baking sheet on the top rack of the oven (about 6-8 inches from the broiler) and turn it on to 400F. When the oven is preheated, switch your oven to BROIL and begin watching them every few minutes to see if they need to be turned. Use a spatula to flip them over and put them back in for a few minutes. Do this until you reach desired doneness. Sometimes that may be 20 minutes. I guess it depends on your oven.