2 week old plant leaves yellowed

Before I transplanted it yesterday it was browning and yellowing a lot more. Now it seems to be recovering. That white stuff in the soil is just some root hormone powder. It was in a solo cup before. Idk if it got root bound and that's what caused the discoloration on the leaves. I think it's healing now though because yesterday it was way worse

Are you feeding it? It looks like a little lockout. I normally don't feed my seedlings until they get their first real set of leaves. Unfortunately we need a little bit more info, how often are you watering? What kind of medium are you using? And are you pH in your water? Cheers! -G.I.JOSE