You can leave the veggies/ oranges with the crickets. Just don't leave too much or they get soggy and will spike your humidity. A roach colony is a good way to start raising your own feeders, roaches are much better for the chameleon than crickets. Dusting with cal no d every feeding except 2x each per month they should get cal with D3 and Multivitamin, I alternate between those every Saturday. Also don't think they have been mentioned yet but BSF larvae/ Phoenix/ reptiworms are a great feeder and can be a staple. They are smaller but have a good phosphorus to calcium ratio for chameleons and don't need any dusting. My chameleons all love the flies as well if I pupate them.