I'm not sure. How old are they? Could possibly be a growth spurt if young, but I don't know if ACFs shed more often during this period. It could be nothing. Terry may know whats going on though.
Oldest frog was purchased as a tiny froglet last May, the other a small froglet in June, and the last one is the youngest I think I got him in September, so these are still relatively small frogs around 3" to 4" give or take.