Similarly with Kirkjufell below, just west of town. Not a mountain either.
However, the one below, in Berserkerjarhraun is a mountain. Fire has heaped it up. It mounts.
The one below at Glitstaðir is tricky. Neither mountain nor fjall, it’s a fell (Skálafell). Behind the farm it rises to 225 metres.
There just aren’t many mountains in Iceland. Lots of places where you can fall down, though.