1. Roasting chicken in the oven requires preheating.

2. Generally, preheating means heating the oven for a while before heating the food, and then putting the roasted chicken in after reaching the predetermined temperature, so that it will not be affected by the slow temperature rise during baking. It affects the quality of the food. The preheating time does not need to be too long. Basically, it is enough to see the oven turn from dark to red.