how long to oven cook whole chicken
1 4 Roast the chicken in the oven for 15 minutes. 2  Reduce the temperature to 375Â°F and continue roasting until the juices run clear and a thermometer inserted into the inner thigh (but not touching the bone) registers 165Â°F, about 50 minutes to 1 hour more. 3  5 Remove the chicken from the oven and place on a cutting board.