I see MC answered your question.
That is normal in some chicks that are a bit eager to get out of their shell. It should dry and fall off shortly.
Many of us have had chicks drag that bit of shell around for a while. Just be observant that it doesn't snag or catch on anything and injure the chicks belly.
If it does start to bleed, use corn starch or dab with a dry paper towel to stop the bleeding.
There are commercially available powders for this as well, but I have had success most times with the corn starch.
Good luck with the rest of your hatch, and welcome!