I do not think a chameleon (any species) should be someone's first lizard - unless they have a herp vet nearby, the $$ to care for it ()vet bills, food, supplements, gutloading feeders, able to provide proper lighting and humidity.
just my opinion...
lele
>>I'm thinking a Jackson's Chameleon, if your temps are actually LOW enough, and there's a very quiet environment for it. The size of the screen cage matters, though--they don't need a GIANT cage, but they need one of adequate size. You'd probably need a humidifier unless you live somewhere where the humidity is very high normally. The screen cage really wouldn't work for the desert lizards mentioned, I wouldn't think. Unless you get a nocturnal species, you will need UVB lighting, though.
-----
0.1 veiled - Luna
0.2 green anoles Jaida & Jetta
0.1 brown anole - Jamaica
0.2 house geckos - Gaia & Tia
0.2 felines - Kyndra and Líta