Leaf issue

That's doesn't matter too much. Crank the humidity up and lower the light a little, she looks a bit stretchy and un-humidified

Hmm this is a tough one :) I think johnson maybe right maybe there is a tad too much nitrogen in that feed. I would advise flushing her for a few days and see how you go but try not use too much as not to over water. Wish you the best of luck with her Im sure you will sort it my friend autos are notorious for not needing much feed until the later stages. Around the first few weeks of flower they usually explode with growth :) Spraying her down with some water every day will also help and in worst case you can get a revive foliar spray they tend to work very well :)

Could be too much nutrirents? Looks like you have the seedlings in some good soil. Are you further adding nutrients to it?