Absolutely! In fact, preparing your roast chicken in advance can help ensure that the skin will be crispy and that the whole chicken is flavorful and juicy. Rubbing flavored butter under the skin, stuffing the whole chicken, seasoning the skin then placing it into your refrigerator is how best to roast a whole chicken. Firstly rubbing flavored butter under the skin will protect the breast meat when cooking and keep it tender and juicy. Secondly stuffing the whole bird will add flavor from the inside and when cooking for a crowd will make it go further. And lastly seasoning the skin will draw out any access moisture so when the fat renders down throughout the cooking process the skin will crisp up nicely. Follow these 3 simple steps in the morning, place the chicken in the refrigerator ready to put in the oven later that evening.