Many herbs are from the same plant family and safe: mint, thyme, rosemary, sage, basil, etc. It’s more that the strong scent of most herbs puts many tortoises off.
Cilantro is from another plant family and safe as well, some people have success with it.
Parsley is from yet a third family and it’s safe as well but another one that is strongly scented.
I’m pretty sure my Russian would eat rocks but she has never shown any interest in a single one of these. Always worth a shot though.