Consider a larger feeder cup - like a bowl. Ensure it is not shiny (not white, not metal) as many chams will not eat from such.
Or Put worms (supers, silkies, butters) on vines and screen and other rough surfaces.
No reason to use pinkies, in my opinion. If you choose to do so, consider making it a rare occassion. Lots of fat, not as much calcium as you might think (bones arent developed).