Preheat oven to 400 degrees F. Coat a large baking sheet with cooking spray. Arrange potato wedges on prepared baking sheet in 1 layer and coat them with cooking spray. Sprinkle potatoes with salt and black pepper. Roast 30 minutes, until tender and golden brown.
If preparing in advance, fill a medium saucepan 3/4 full with water and bring to a boil. Add the potato wedges and boil for 5 to 7 minutes, or until just beginning to get tender. Drain well. When you plan to serve them, bake par-boiled potatoes at 400 degrees F until golden brown, about 10 minutes.