Short answer is no. Canned carrots are not good for your chameleon since they are salted. Chameleons can eat fresh carrots. The best way to have your chameleon ingest fruits and vegetables is to gut load your feeder insects. Gut loading is just feeding your cham’s crickets (and any other safe feeder insects) until you can ensure that they (the insects) can’t digest anymore fruits and vegetables and then feed them to your chameleon.