He might need a bit more protein/fiber in his diet, try some roaches if you can.
If you use crickets, get them direct from the breeder, not a petstore,
cause they can have parasites.
These are all chameleon-safe plants, as I mentioned in the PM (Might help someone else too)
Abelia
African Daisy
Sweet Alysum
Chamomile
Arbutus
Asperagus Fern
Aster
Baby's Tears
Bird's Nest Fern
Boston Fern
Bottle Bush
Bouganville
Bridal Veil
Bromeliads
Camellia
Coleus-this plant is midly toxic, it is ok for most chameleons but if you have one that likes to eat plants like a Veiled do not use this plant.
Corn Plant
Corn flower-also known as bachelors buttons
Croton
Draceana
Emerald Ripple
Eugenia
Fuschia
Geranium
Hen and CHicks Succulent
Hibiscus-my favorite choice
Hoya
Iceplant
Japanese aralia
Impatients
Jade Plant
Jasmine
Lavender
Marigold
Monkey Plant
Mother of Pearl
Natal Plum
Painted nettle
Palms
Pampas Grass
Parlor Palm
Peperomia
Phoenix
Piggyback Plant
Pilea
Pink Polka Dot Plant
Ponytail Plant
Purple Velvet
Spider Plant
Staghorn Fern
Swedish Ivy
Tree Mallow
Umbrella Plant
Velvet Plant
Wandering Jew
Warneckii
Wax Plant
ZEbra plant
zinnias