I’m not exactly sure what you mean by easier to read. Do you mean to access them and read them? or are you referring to changing their layout/format?
If you want to change the format check out this link log (Caddyfile directive) — Caddy Documentation
You can change you format of the log using one of those methods.
Also check out this wiki posted not too long ago. I tried playing with jq but I’m not at that level of understanding yet.
Logs will be my next goal to get right on my system. Have fun learning Caddy!