How long and what heat to roast 1.7kg chicken?

To roast a 1.7 kg chicken, preheat your oven to 190°C (375°F). Roast the chicken for about 1 hour and 20 minutes, or until the internal temperature reaches 75°C (165°F) in the thickest part of the meat. Basting occasionally and letting the chicken rest for 10-15 minutes after roasting will enhance its flavor and juiciness.