Hey Jeff,
He should not be eating right before lights out. the rule of thumb is to have at least 2 hours of basking after last meal so that he can digest his food. If he eats and then his body cools soon after the food will just ferment in his belly. Might be OK for a while, but will likely cause problems down the road.
Back him up or change his light time.
Darwin (dragon) will sometimes do this, but it is only rarely, like when I forget to take his food out of his tank and he might eat a few pieces of veggies.
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Chameleon Help & Resource Info
1.0 Nosy Be Panther Chameleon - Cyrus
0.1 Veiled Chameleon - Luna. She's now hanging from her big jungle gym in the sky
1.0 Beardie - Darwin
1.1 Side-blotched lizards - Ana and Stan for now 
0.2 felines - Kyndra and Lita
0.1 African Clawed Frog - Skippy
0.1 Chilean Rose Hair Tarantula - Rosa Leigh, Died 4/21/06 
0.1 Goliath Bird-Eater Tarantula - Natasha, donated to science 4/4/06
?.? Pinktoe Tarantula - no name yet