He looks fine. Maybe shed coming as others' pointed out.
Watch the body movement and tongue movement.
Darty and quick movements can mean nervous. Quick tongue flicks, short and fast, can also mean nervous or hungry. If out of tank, likely nervous.
If breathing isn't fast, and tongue is all over - showing curiosity, tasting the air, etc. I wouldn't worry at all.
Also, how old and big is he? Could just be getting used to being handled.
Also, BCI's are curious animals, they do not tend to stay still like BP's, so he could just be moving around and look like he might strike.
Any hissing?
Again, 99% he is cool as a cucumber and might be getting near shed.