Also a scriptwriter, he adapted his own published story for Burning the Bed (2003). Directed by Denis McArdle, this award-winning film stars Gina McKee and Aidan Gillen. Chapman has written several episodes of the Cbeebies and RTÉ series Garth & Bev (Kavaleer, 2009/10). His audio play, Doctor Who: Fear of the Daleks (Big Finish, UK, 2007), was directed by Mark J.Thompson. It stars Wendy Padbury as Zoe and Nicholas Briggs as the Daleks.
With Philip Casey, he founded the Irish Literary Revival website in 2006.This brings out-of-print books of Irish interest back into circulation online, with the consent and participation of the authors.
Chapman has been a finalist twice in the Sunday Tribune Hennessy Literary Awards. His story ‘A Ghost’ won first prize in the Cinescape Genre Literary Competition in L.A.The title poem of The Darwin Vampires was nominated for a Pushcart Prize.