they all look healthy to me. no leaf discoloration no wilting... its a good possibility they havent grown as fast due to stress if u repotted them etc some recover faster than others... try some nitrogen rich feeder. this is about a good time to add a light fan to these guys to strengthen their base a bit so they grow thick stemmed and not wilty/droopy... they need a strong base to hold up all those big fat dense buds your going to be harvesting... well... maybe not dense since ur using flouros but I'll still smoke them with you haha