I just came across this thread, i myself tryed to ask a few questions about parsonii last oct as I was in the market for one back then and a few people gave me the if you don't no how to care for them don't own then treatment but it is very hard to learn about these simply because there isn't anything out there on them. Anyway I now own a parsonii and have since December the 8th and things are going great
They are hard to look after, my thought to be male does have a little mouth problem witch I am clearing up but mouth problems are common so I hear with parsons. Apart from that he is growing very well and is very healthy
In my opinion the best thing you can do when thinking of owning a parsonii is buying it from the right person, you want a good cb strong animal, if you do that your already on a winner, I was very lucky to get a great animal and things are going great, he's gained 30 grams in 4 months witch is very good for a slow developing chameleon