You should order some pheonix worms! Baby chams love them! The are high in calcium and basically the best worm out there. That gives you a little variety in with your feeders. They are a bit harder to feed to older chameleons because they aren't all that big and relatively slow. I buy mine because my jackson will snack on them, once they turn to flies my jackson AND panther go nuts over them.
As for your cricket question, what size are they? My chameleon was knocking down atleast 20 3/8 crickets a day at that age. Bumped him up to 1/2 and he'd eat ten or so.