Preheat oven to 220°C. Lightly spray foil-lined tray with cooking spray.
Place potato wedges into large bowl; cover with water. Let stand for 10 minutes. Drain potatoes and pat dry.
Place potatoes into another bowl; add oil, stock powder, pepper, chili and paprika. Mix until the potatoes are coated.
Arrange wedges on greased tray in a single layer. Bake for 20 minutes. Remove from oven; turn wedges and cook for further 20 minutes, or until golden brown.