Preheat oven to 375 degrees F. Wash and scrub potatoes until clean. Dry with a clean lint-free towel.
Rub each potato all over with half of the oil (2 tablespoons between 6 potatoes). Pierce the center of each potato with a knife and place on a baking sheet.
Bake for 1 hour, or until tender. If you have very large potatoes, you may need to add to the cook time.
Remove from the oven and adjust the temperature to 425 F (use the convection setting if you have it). Brush each potato with remaining oil, and season with salt and pepper.
Bake at 425 F for 15-20 minutes, until skins are crispy. Serve.