Preheat oven to 450 degrees. Spray baking sheet with nonstock cooking spray.
Mix together crushed coriander and fennel seeds, oregano, brown sugar, pepper and salt; set aside. In a medium bowl place potato wedges and toss with oil to coat. Sprinkle evenly with seasoning mixture.
Place potatoes in a single layer, without touching one another on the prepared baking sheet. Roast in middle of oven 15 minutes. Carefully turn wedges over with a spatula and roast until tender and slightly golden, about 15 minutes more.