You don't say exactly how old he is or what size the crickets are, but here's a link with very good info. http://raisingkittytheveiledchameleon.blogspot.com/
Hopefully, you are feeding him a variety of insects--not just crickets--and that you are also dusting the feeders (I see you do gutload them).
ya im dusting with calcuim d3 once a week...the crickets drink a gell that has calciumin it ( without d3)...also i put potatoes and appples in for gutload they are medium size crix
That's about the max you want to be feeding. You'll want to start tappering off as he gets older. Watch his fat pads and tail for signs of excessive weight. If I were you I'd add choices other than just crickets.