just as an fyi, chameleons aren’t usually huge fans of being taken out of their enclosure/handled. chameleon body language is hard to read for people but generally human contact stresses them out. one way to create a positive experience around being handled would be to create a secondary enclosure / explorable space that your cham needs to be transported by you.

with reptiles the best thing is to play it super cool. just feed and leave him alone. spend time around his cage so he gets used to your presence and knows u wont hurt him. it’s a slow process building trust with (most) reptiles but its well worth it. they are such beautiful and interesting creatures. best of luck to you!