it doesn't look like N def to me, it is only a 15 day old plant and repotted 4 days ago, there is plenty in the soil for sure. my are in smaller pots for 4 weeks right now and haven't developed such def

i rather would say it is a mix of root damage with root rot do to the large soil volume the new pots hold.
wdb, did you water heavily lately before and after you replanted this ones?