Ya thats about the age they start to munch. Feel free to give almost half his food as plants.
Accepted plants vary with individual preference and you should experiment to find your chameleon's favorites, but many veiled chameleons with eat the Ficus, Pothos and, more rarely, Schefflera plants decorating their cages. Chopped dark greens (e.g., romaine, mustard, kale, endive) and other plants your chameleons prefer should be offered once or twice a week in an elevated dish. Flowers to try include dandelion (and its greens) and hibiscus. Fruits and vegetables that are relished by many veiled chameleons include apple, strawberries and raspberries, mango, papaya, carrot and squash.
Mine's top favorites were:
blueberries
hibiscus flowers
cantaloupe
dandelion leaves