Remove the chicken from the brine and pat it dry to remove excess moisture.
If desired, tie the legs with string and tuck the wings under. Brush the chicken with most of the melted butter, covering all surfaces (the butter will solidify upon contact).
Sprinkle with pepper and a tiny pinch of salt. Place the chicken on a rack in a heavy-based roasting tray and let it sit for 20 minutes.
Preheat your oven to 220°C / 430°F.
Reduce the oven temperature to 180°C / 350°F, then roast the chicken for 50 minutes to 1 hour (Note 7), or until the internal temperature at the joint between the leg and thigh reaches 75°C / 165°F, and the juices run clear.
Check the chicken at 45 minutes. Rotate the pan if necessary for even browning and brush the top with the remaining melted butter.
Remove the chicken from the roasting tray, cover loosely with foil, and let it rest for 10 to 15 minutes.
The chicken will be juicy and may only need a slight drizzle of the pan juices (be cautious as it can be salty). Alternatively, prepare gravy while the chicken rests (see Note 8).