you need to make sure your gutloading your feeders with a variety of fruits and vegetables, as well as grain and other things...
Try searching gutloading using the search feature... I'm sure there are many great threads about gutloading so read them and research what you think the best recipe for you and your chams is. =]
FYI: broccoli is not a good gutloading product. It can cause problems in your chameleons... so not a good idea to use it at all.
I have been feeding my crickets greens (dandelions, kale, collards, escarole, endive, mustard greens, etc.) and veggies (carrots, squash, sweet red pepper, sweet potato, celery leaves, zucchini, parsnips, etc.) for years. I know the greens and veggies grow healthy crickets because I have had a colony of them (crickets) growing in with a pair of prehensile tailed anoles for years and they were/are healthy and produce eggs. (BTW...since I can't dust the crickets that grow in the cage easily, I dust the greens and veggies instead. Also...the prehensile tailed anoles (at least this species) are omnivores and eat the greens and veggies too.)
Fruits and veggies such as these are important both for the nutrients they give (via the insect) to your chameleon, and also because well hydrated prey results in a better hydrated chameleon.
The "wet" portion of the gutload, which should be your principle gutload IMO, can frequently includes things like (switch it up with a different couple of items every other day or so): dandelion leaves, squash, carrot, yam, orange, collard greens, alfalfa sprouts, mustard greens, pomegranet, kale, romaine, apple, peas, blueberries, raspberries, sunflower sprouts, ... (avoid broccoli and spinach). I wash these things and most of them are provided raw, sometimes chopped a bit but usually not.
The dry portion (the lesser portion) of a gutload can include (blend with a coffee grinder or food processor): spirulina; bee pollen; alfalfa; organic raw sunflower seeds; dried seaweed/kelp/dulse; oats; unhulled sesame seeds, small amounts of quality whole grain cereal (Im currently using Kashi); oak leaves; powered egg; ground almonds; ground brazil nuts; wheat germ; hemp seed; fig powder; high quality monkey chow; avian pellets (watch out for vitamin A content)