Hi I live on Oahu Hawaii and there are no breeders but if you find a jungly area on the wet side of the island then go into the forest at around 6:30 with a flashlight and you will find a chameleon for sure and it only takes about 10 minutes to find one.
My Chameleon had 18 babies and a lot of them got the eye closing thing and you need to every hour gently spray their eye open with a soft spraying bottle.
Sorry to say there are no chameleons of any kind in Costa Rica, I used to live there for a long time and if there was any chameleons there I probably would have a ton.