If the idea of butchering the chicken is a bit too much for you, when you buy the chicken from your grocer or butcher you can ask them to spatchcock or butterfly it for you. You can also roast the chicken whole instead of spatchcocking it. For this version, you can fill the cavity with more lemon and orange slices, leeks, shallots, garlic and a sprig of thyme. Cooking time will be a bit longer this way, but the best way to know that it is done is with internal temps taken with a good digital meat thermometer.