As DoDrugs420 said, sometimes baby seedlings are a bit strange and need a few days or so to "sort themselves out" and if first leaves are a bit "funny", this is no indication of problems or deficiencies at this stage. Just like people, some plants need a bit of patience at first, to then grow into beautiful plants. Go easy on the nutrients too, plants at this age/size need surprisingly little feeding, however they do need good deep watering once in a while, rather than a little bit of water each day. A 3 inch seedling can have a 6 inch taproot and if you would like to see some pictures of how long roots get in such a short amount of time, have a look at my diary called "Holy Mackerel... WTF" for an insight.
Hope this helps,... Organoman.