For a larger chicken, roast at 430°F (220°C), 0r 400°F (200°C) fan forced, for one hour. Then, reduce oven temperature down to 325 (160°C). Baste and cover chicken. Roast, basting 2 more times while cooking, until chicken is cooked through, about 45 mins to an hour. Internal temperature should read 165°F (75°C) and juices run clear when pierced.