How would you like having your food jumping all over you from every direction??
Breyas hates food that climbs on him, so I refridgerate all of his crickets. I gut-load them in the cricket keeper for a couple of days first, and then just keep a bunch in the fridge all the time. I used to feed him in a separtate container, but he outgrew it... and then he outgrew the bigger one...you get the idea! He's grown at least 13" since I got him last September!
Now--mealworms. Sorry, you won't like this (I didn't either!) They can't be used as a staple. They don't provide the nutrition these guys need and they can cause serious impactions. If your BD is filling up on mealies, no wonder he won't eat crickets! I told my daughter that the worms are Breyas' "chocolate icecream," good for dessert, but he can't live off them. In fact, I've taken him completely off meal- or super-worms for a few days because he almost became impacted from too many supers one day last week. I'm giving his system time to recover before reintroducing them as an occassional snack.
Beardies are just like us: our favorite foods are usually not the best for our bodies, either!