You don't need to open the 'bator and lose humidity if others are pipping and hatching....If you have other eggs hatching you can leave the chick in there for a couple of days if you need to...they absorb the yolk before they hatch so they don't have to eat or drink for a couple of days!
If you need to take it out then it just needs to be good and dry and fluffy first.
Congrats on your chickie!