Sounds like "Luther the Geek" to me. He doesn't dress like a chicken, but he clucks like one and bites the hell out of his victims with his metal teeth.
Here's the IMDB Page: http://www.imdb.com/title/tt0100079/
And just because I'm a publicity whore, here's my review for the film at Rogue Cinema:http://www.roguecinema.com/article739.html
I'm pretty sure this is the flick you're thinking of. Lemme know if it is!