I think with Coconut or alot of lizards that enthusiastically come to the door , it is just a trained response to knowing they are going to eat. 
She has an attitude and does not like being held or even touched.
The male who is older Cadberry is a gentle big guy who does not mind being touched , or taken out. I also have a male werners chameleon who eats from my hand only because I have always stood there handing them food do they do that. Or I let the bug climb the screen in any case they begin to asociate YOU with food.
Another thing that I read is wrong, but I I did it because of a lack of space anywhere else, and also because it provides the best temps, is I have all of my chameleons in our dining room, against a back wall.
They are in the midst of everything going on. They see dogs, Us, hear the tv, everything. I personally atleast for my chameleons do not see a problem, they sit out and bask and climb around all day, so long that sometimes I forget their lights should be turned off because they are still active at night.
They are not frieghtened by sounds, or seeing the other animals. And are more trusting and "Tolerate" us as well. They seem to know nothing bothers them and do not try and run or hide when you approach the cage, but so come closer.
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PHEve / Eve
Contact PHEve
always coming to the door when you walk by to get a handout.
