Preheat the oven to 190°C. Put a wire rack on a baking sheet and grease with non-stick spray.
1 Use meat shears to remove the backbone of the chicken. Open up the carcass and place the chicken, breast side up, on a work surface. Flatten the breastbone and season the chicken all over with the chicken spice. Transfer to the wire rack.
2 Drizzle the oil over and roast for 40-45 minutes or until golden brown and cooked through.