Whats wrong with my new baby Leopard Gecko?

I just got a new baby leopard gecko (from Petco) and it seems like there is something wrong :( It's only about 8-10 weeks old and it's name is Sabaku Nichibotsu, which mean "Desert Sunset" in japanese. I brought him home just last night and he hasn't even eaten today! He seems very skitish and nervous. So far is viv is a 10gal tank, a log hide place, a homemade humid hide, a smooth dish for calcium and mealworm, and a dish for water. is it just because he is moving to a different place? Please help i am worried about little Sabaku <3