INGREDIENTS 1 med onion, peeled and thickly sliced3 stalks celery, halved lengthwise4 carrots, trimmed and split lengthwise in half1 (3 to 4 lb) whole chicken, cavity cleaned and rinsedKosher or fine sea salt and freshly ground black pepper1 lemon, quartered1 small onion, trimmed, peeled, and quarteredFresh herbs such as sage, thyme, parsley, or rosemary, rinsedOlive…