new panther not eating

[Pookie]

I just purchased a 3 month old panther cham at the NY Reptile Expo 2 weeks ago. Since i purchased him i noticed that he would drink, but wasn't eating. I have him in a 22 gal reptarium with many brances going up and down the enclosure. He has a murcury bulb placed above the cage w/ a shady side aslo. He seems to be roaming around just fine but never eats. I only got him to eat once by place some small mealworms on the top of his cage, and letting him up there. He ate 3 of them at this time. That was about 4 days ago. I keep offering him free roaming crix along with some in a cup that hangs from the side of the cage. Any other suggestions? I'm scared that he will continue not to eat.