Yes you heard me, BRUSSEL SPROUTS. I am not kidding. I was like you once, a non believer until I came across this little beaut. Roasting the Brussels underneath the chicken whilst they soak in the juices is a whole new world to the mandatory soggy nonsense you're used to at Christmas. Hell if that chicken wasn't so damn tasty then they'd almost be the star of the show.
Continue roasting for about 40 - 60 minutes until the brussels have roasted and browned and the internal temperature of the chicken hits 75C.