What is this?

[MSchep]

Hi Friends,
Looking for help/advice on what I might be dealing with in these leaves I've just cut off my Sungold plants. I've been dealing with aphids in higher number this year than I have seen before, but other than that, its been fair growing so far. I have been pruning a fair bit (two stems per plant). Disease has not been a major issue for me before, humidity is always a non issue here.

If there is not a clear diagnosis, any advice on other symptoms I should be looking for a given hypothesis would also be helpful.

Thanks in advance for all the wisdom you more experienced growers can provide.