Warm the oven, dry the bird
Heat the oven to 425°F (220°C). Pat the chicken dry — completely dry, inside and out, with paper towels. Wet skin will never crisp. This is the whole game.
Let the bird sit on the counter while the oven comes up to temperature. A cold chicken in a hot oven cooks badly and sulks in the middle.

If you skip the drying, we both know. You skipped it. The skin will know too, and it will punish you.