Step 1Preheat the oven to 120 °C/ 250 °F (fan assisted), or 140 °C/ 285 °F (conventional). Set the oven racks to lower-middle and upper-middle positions. Use a baking tray deep enough to gather the fat as the chicken wings bake. Line the tray with baking foil to make it easy to clean. Place a rack on top of the foil.