I start off with a wedge of apple or pear impaled on a branch in the cage. I also put some chopped up greens (dandelion, kale, collards, endive, escarole, mustard greens, etc.) and veggies (carrots, squash, zucchini, sweet potato, sweet red pepper, etc.) and a little bit of fruit (apple, pear, melon, berries, etc.) in a peanut butter jar sized lid on the floor of the cage...the free-ranging crickets will eat it if the chameleon doesn't....but the chameleon usually figures it out.