Whats going on with the leaves?

i'd say more than safe to start, you have some deficiences, if you haven't fed yet. I'd look for those signs next time and jump it a bit. with an autoflower you don't want to start too soon. a toxicity is much worse than this. Only other thing to rule out is what you re-potted into. was it a 'hotter' soil? You have to consider what's in the soil, since it can contain an abundance of nutes. For exampl, if that's Fox Farm OF, i'd be a bit more careful about what i add. anyway, i think you have an honest-to-god Ca deficiency... as often as people think they have one, they often do not. If you think the soil is hot, just add some cal-mag or soemthing with calcium avaiable in it. cal-nitrate can work too... in future, i'd look into a soil amendment called "garden lime" it will help keep calcium levels up in your later in the grow.