Thats tricky, they look pretty good but just wilty. If soil is still dry they may need water, but soil doesnt look too bad. its not too wet is it?>you are letting the plants go 2 or 3 days between watering MINIMUM right? Unless its your soil is too "hot" with too many nutes in it.
Normally id say it looks like over watering but your soil looks a bit drier than plants I see suffering from overwatering .
Other than that could be heat stress if your tent is too warm or your not changing the air in the tent often enough, or it could be too dry in there and the young plants are having trouble sucking up enough water to keep up with how much they are "sweating".
id run thru that list and if thats all good, then yeah check back to see what the others say.
@m0use im thinking of you here.