I think she's experiencing just a bit of nute burn. I experienced this just a little bit last time around. The FFOF mix must be just a bit high for her as a seedling, but she's hanging in like a champ!
Laughing Buddha was tough for me to grow but gonna try again at some point. Yours is looking wonderful. Keep up the amazing progress. Good luck stay safe happy growing cheers!!!!! If you have a moment please stop by my YOU DECIDE diary and place a vote