There's the likely problem. Are you feeding standard 16% layer pellets?
Dried bugs, scratch etc are treats, they're supposed to be less than 10% of their diet, a pinch per bird, once or twice a week.
They're very likely just picking out the bugs and leaving food for last.
Bugs have nice protein but high fat and low nutrition, like fried mozzarella sticks, for example.
So they're likely nutritionally deficit, production breeds such as your birds are need a good, balanced diet for their health and laying.
I'd recommend you invest and a good layer feed, that's at least 18% protein, (if you're feeding 16%) reduce the treats and a good way the make eggs better is an occasional leafy vegetable.