I would worry about it.
How wet are those seed starters, how far away is that light and how many watts is it?
It doesn't even look like it opened fully so the cotyledons could start getting light....looks like the shell is still connected and weighed it down...wet conditions, light too weak, shell still stuck closed...could be a combination of things.
You could build a little brace with a twisty tie to prop it up after carefully removing the shell but the damage may already be done. Best bet may be to just start another one since only 3 days in.