Though the "chimney" is off-width, the highly-featured corner in which it resides means that you won't really need any off-width technique to climb it. A pleasant, albeit short, climb.
Walk up to a dirt-covered ledge in the corner between Cathedral Wall and Never Never Land.
We toproped it, so I'm not 100% on the pro. The chimney itself would big (fist and up) gear. The faces in this area tend to be cut with horizontals, so you may get some tiny stuff in there. Natural anchors for toproping.