Amy's Animals :
The chickie hatched! and it looks fine and healthy, lots of peeping! It's still wet so I can't see what color it is, it's a the mom is a Barred Rock and the dad a Buff Orpington.
Maybe it will hatch before you need to open it again to turn the eggs. You should be fine with opening it once or twice.
Good luck and keep us updated!
When you open the lid ~ a rush of dry air can enter the incubator and can cause problems for the one pipping. How many more do you have to hatch with this one?