If you have two males, one could be subordinate and the constant stress of being housed with a dominant male could cause it to not eat. The other thing to consider is they are always wild-caught and as such probably harbor numerous parasites. Your non-eating lizard may be secumbing to a parasitic infection brought on the by the stresses of captivity. When in doubt get a fecal exam done by a vet with the follow-up treatments. Finally, males have 11-17 femoral pores, females have no femoral pores.
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Matt Campbell
Animal Keeper, Small Mammal/Reptile House
Lincoln Park Zoo Chicago, Illinois

Assistant Curator
Wildlife Discovery Center at Elawa Farm
Lake Forest, Illinois