That is the yolk sack. Keep the baby humid or in the incubator until it is absorbed completely. Even if its not absorbed it will dry up and fall off. It looks like the hatchling was just a tad premature and didn't have a chance to finish it up.
Is the stomach full? It looks like it is in the pic. I wouldn't call it normal but happens with many reptiles. It not something to be overly concerned about.
Thank you, this baby actually came 2 days after it's clutch mate did. I have it in it's tub right now it is very humid in there so should I keep it in there or put it back in the incubator?