I've had that happen before. A chick hatching that early could be from the egg being stored too warm before incubation started but is most likely caused by the average incubating temperature being a bit high. You might want to try adjusting your incubating temperature down a bit before your next incubation.
In spite of what you may read on this forum, you probably did not cause any problems with what you did. It is possible to shrink-wrap a chick by opening the incubator after the egg has pipped, but there is a big difference in what is possible and what will actuallly happen. I've opened my incubator a few times when chicks have pipped. I don't like doing it and I don't recommend it as a general practice but sometimes you have to weigh the options and take your chances.
I have shrink-wrapped a couple of chicks doing that, but there have been a whole lot that were pipped and were not shrink-wrapped. If I were you, I would not stress over it. It's done, you can't change that and you probably did no harm.
You might consider something like this if you need to add more water to the incubator during lockdown. I go in through a vent hole.