Springtails. Very common soil arthropods. There are many different species - and likely came in on something you placed in the tank. Harmless to your chameleons [and eggs if there are any in there]. Probably too small for adult pygmy cham food - but can be a good food supplement for hatchlings.
Rhettus -
Both of your auratus are very skinny (especially the froglet).
I would isolate them and feed them often with small amounts of food.
Having a fecal run would also be a good idea.
Oz
The cocofiber will not stick to the silicone if it is even slightly moist. It needs to be bone dry. Lay it out in a thin layer on a warm, dry day - or bake it in the oven in a thin layer.
Also - you need to do the silicone/coco method in small sections; otherwise, the silicone will start to...