Its a male, BTW.
You can/should gutload/feed your crickets a wide variety of greens (dandelions, kale, collards, endive, escarole, mustard greens, etc.) and veggies (carrots, squash, sweet red peppers, sweet potato, celery leaves, etc.)
Since many of the feeder insects have a poor ratio of calcium to phosphorus so its important to dust with a phos.-free calcium/D3 powder at most feedings.
If you dust twice a month with a phos.-free calcium/D3 powder it will ensure that it gets some D3 without overdoing it and it leaves it to produce the rest of its D3 from its exposure to the UVB. D3 from supplements can build up in the system and lead to problems while D3 produced from exposure to UVB shouldn't as long as the chameleon can move in and out of it.
Dusting with a vitamin powder with a beta carotene (prOformed) source of vitamin A will ensure that it gets its vitamins without overdosing the vitamin A since beta carotene won't build up in the system. However, there is controversy as to whether all/any chameleons can convert the beta carotene into prEformed vitamin A so some people give their chameleons a little prEformed vitamin A once in a while. Excess prEformed may prevent the D3 from doing its job and lead to MBD...so don't overdo it.
Appropriate temperatures also play a part since they aid in digestion and so indirectly in nutrient absorption.
Calcium, D3, vitamin A and phos. are all important players in bone health and need to be in balance. You need to look at the supplements, what you feed to the chameleon and what you feed to the insects when trying to balance them.
This species need special attention to be given to hydration. Make sure it drinks every day even though it may take persistance.
Good luck with it!