Lots of controversy. The voice of Chef, Issac Hayes, was said to resign because he had issues with South Park making fun of religion, specifically the Scientology/ Tom Cruise episode. He was supposedly already in a coma when his signed resignation was written. Many questioned the validity because there seemed to be no issue with other religions. He later passed away.
Isaac hays quit because they made fun of his religion,so they killed him off.he was shot,fell off a cliff ,impaled on rocks,a wolf and a bear disembowled him,and ate his face...edit...some Christian scientists made a darth vader type of character from his dna