Climb the big chimney just to the left of Extreme Unction. Walk around the first big wall of the Watchtower back into the corner. You can stay out on the face or wedge yourself way into the chimney.
Protection
I top-roped this route from the top of Extreme Unction. It's a great chimney with lots of cracks and seams for trad pro as well.
This is a great first chimney climb. Its easy and pretty fun if you haven't every done a chimney before. You can definitely TR of the extreme unction anchors, but expect a lot of rope drag. Also lowering some one on belay back behind the chock stone at the start is interesting, but not to bad.