You might look for insect based chicken feed, I believe another thread on here someone was using that, it was dried insect medly or something like that, not pellets but whole crickets, mealworms etc
Yes, that is a good idea, though some irony, insect based chicken feed instead of chicken based insectivore diet.
I don't think you can get better than live fresh crickets.
Why don't you freeze them ?
Live fresh cricket
are the best. The practicality is something different. I did once freeze a few.
When I order a kilo of crickets, a large
used cardboard box arrives in my car park filled with old style egg cardboard crates, a bit of vegetation for moisture, and a
billion crickets. The crickets manage to find their way out of the box without help. I can take a few egg crates to the fish tank and bank the crickets out into the tank and close the lid. Many crickets escape on the journey. Many of the crickets that were in the tank, manage to squeeze their way out from under the lid.
The chalceus do go mad and eat a lot.
After two days, the car park and the house are full of crickets and the box is empty.
I could not freeze the whole box. It would not fit in my freezer. I did try taking one egg crate, putting it in a plastic bag, sealing the bag and placing it in the freezer. A lot of work for about fifteen crickets.