There all growing fine.
Just keep the lights atleaste 3 & half inches away.
Water when needed (Soil dry 2-3 inches under)
Don't use any ferts till the plant as atleaste three weaks old,


The reason it could be like that, Is because it either somehow got ripped when the leafs were small and grew out like that, Or its just a little bit behinde.

But other than that your plants look good, Keep up the good work.





Ps: I can't really see the size of the potts you got them in, But they look a little big. To prevent root rott you should have them in smaller cups, Prefferably jiffy cups. Because the roots cannot drink up all the water, And it can sit under the soil becoming stagment.