This is normal, they all do that.
Mine does it too or not as much now that he's getting older, he likes the air bubbler so he swims back and forth. ID Sharks are crazy by nature, my Oscar use to hate him because he's all over the place. As they get older, they will settle down. They are some excellent jumpers too, when moving my tank I put the fish in a plastic tub, the height I thought was pretty high but the ID Shark nearly jumped out, it was impressive that they can jump so high from a standing still position.
Remember too, this is your fish's new home, they need to settle into it, just like people when they buy a new home. ID Sharks like shaded areas so add some plants, decorations, places to hide, etc.
It takes time for a fish to get to know you, I like to put my face near the class so the fish can see him and I'll put my hand in in the water, this also gives them a connection to you. Once you start feeding, they will know who you are. Mine comes right up to the glass when I tap on it and show my face, like a trained puppy.