I agree chairperson is an abomination. I would go with chair every time. According to "A Dictionary of Modern Legal Usage" the use of chair for the person chairing a meeting goes back to the 17th century, so can hardly be called a piece of rampant PC.

Of course there is risible hypocrisy detectable in the PC movement, but at least some of it comes from urban legends industriously spread about by its opponents.

Bingley

Bingley