It could be due to settling in, and it is eating so it's not like it's not bothering.
From experience, my male beardie does not eat alot at all and goes days without sometimes but after a vet check he proved to have no problems, he was just choosy about his meal times
Of course the case mybe different for your beardie and after a while you are still concerned maybe you should get him/her checked. Little beardies are usually greedy little things
Have you tried more of a variety? Tried different types of crickets, maybe locusts and veg?
0.1.0 Bearded Dragons
1.0.0 Western Hognosed Snake
0.1.0 Corn Snake
0.3.0 Shubunkin Goldish