I see two potential problems. The first is that it is underwatered. Depending on your medium, it might be dry underneath. I would water it thoroughly, to the point of saturation. If it is low on water, this will show results within 8 hours. The 2nd issue is overfeeding. Too much Nitrogen or other nutrients ca upset the osmolality of the plant, as the nutrients are typically salts of the nutrients. Too much of these will start to pull water out of the plant, causing it to look thirsty despite plenty of water in the medium. Leaf clawing is also a sign of this.
A third option could be the stress from transplanting. Depending on how much of the roots were included, it could take a while for them to regrow...a copious watering should fix that as well. What type of growing medium are you using? FWIW, I pop my seeds directly into a 6 gallon bucket after they sprout...don't worry that you did it too early! Many mediums can't be overwatered because they drain so easily. I always provide a lot of water and have never had any problems as long as there was good drainage. Let us know how things progress!