The Real Ghostbusters S04 E03 Poultrygeist

"Who you gonna call? Ghostbusters!"

A Werechicken strikes an unsuspecting farmhouse, leaving a trail of mayhem and one very large egg. After a hungry Slimer tries to cook the egg and unintentionally hatches it, the newborn Werechicken bites Egon, turning him into a half-man, half-chicken creature!