She must not be doing very well if she's letting you watch. Did you ever think about the natural consequences of a predator watching you lay your eggs?
Chameleons are best left alone to lay their eggs. Most times, if they spot you while they are digging, they will abandon that spot and start digging elsewhere all over again. This is because in the wild, the eggs are a big meal for many animals and if the future generation is to survive, the chameleon must lay the eggs in secret so as not to be found.