If they are dried off, you can remove them. I have often had hatched keets help their siblings out during the zipping stage when I incubate guinea eggs.
Thank you! I'm a first timer so I'm just paranoid about everything. Haha@mamablair I've has this happen before and the chick trying to hatch seemed to be fine afterwards. If your other chicks have got a hold of walking and are dry then you could remove them from the incubator. I find that the peeping of surrounding chicks can encourage those that need to hatch yet. The other chicks might be pecking because of the contrast between the beak and the shell, or because they're curious, I'm not sure. The chick looks close enough to hatching that you could probably leave everyone in there worry free