Even if you wrote watered properly. Is it?😅 Growth of 6 - 12 cm in several weeks.
That leaf curl looks more like slight overwatering or low root-zone oxygen than a pest or disease. Especially in no-till setups, heavy or compacted topsoil layers can slow drainage early on. The color looks healthy, so no signs of major deficiency. Try improving soil aeration slightly, and let the top inch dry out more between waterings. Perhaps some additional holes in your pot, e.g. if your soil is very compact?!
You did transplantation at arrival, just check for the roots. If the pots are not completely rooted (they should be) I'd say watering or pH. So quick root check will be better than a random guess I suppose 😎 If they are rooted and not smelly at their feet the guess is quickly ruled out 😊