Awww thank you

means a lot coming from you

Yeah, its a real bummer we can't give them scraps!
["The reason scraps are illegal for chickens is the potential for contamination in a domestic kitchen leading to disease transference and disease risk."] Apparently a vet did a test on two sets of backyard flocks, one flock fed scraps, the other not, the result was, those fed scraps had 37% incidence of Salmonella and those not only was 0.05% - admittedly a remarkable difference but that doesn't mean all kitchens would be the same.
As for mealworms - mealworms are imported so may have been fed or been in contact with animal protein which if infected could pass on disease - here's an excerpt from UK Government - Department for Environment, Food and Rural Affairs (DEFRA)
["Dried terrestrial invertebrates (insects) and processed animal proteins (PAPs) of insect origin cannot be used in farm animal feed or in treats, eg hen treats.
Dried aquatic inverterbrates can only be used in farm animal feed (for non-ruminants) if they come from an approved ABP premises (or non-EU equivalent) – then they’re considered fishmeal."]
They can be used for reptiles, wild birds, non food birds, amphibians, lizards, non food fish, turtles, geckos, spiders etc - my friends daughter had a pet bearded dragon which loved snacking on mealworms - I would have liked to have given my birds mealworms but as I can't I give them earth worms instead.