i have a togo fire skink and i know that he absolutly adores crickets. powdered of course. i haven't had him long enough to actually see what else he will eat, but i've heard that they like feeder fish, meal worms, red wigglers, and other things like that. also try the fruit stuff. if he is new, he may just be nervous, so give him time. you said that he isn't using his basking area? that sounds like a problem seeing as how that is how they digest their food. he may be too cold to eat.

if that is the case, you need to warm him and and do it quickly! how big is he? how big will he get? and, does he have a proper place to burrow? i know that MY skink, Gucci, LOVES to burrow and he spends the majority of the day under his bedding. maybe you need to see about that too.anything could be the cause of the food strike. hope this helps!