Broil the chicken halves and lemon halves on the sheet, rotating the sheet every 5 minutes or as needed, until the skin on both halves is bubbling, golden brown and crisp, about 15 minutes.

When ready to roast, remove chicken from fridge and let warm slightly while you heat oven to 400 degrees. Remove chicken from bag, shake off any excess yogurt, and arrange, skin-side up, in a ...