I'm used to seeing a more clearly defined line between dark and light in the spots of Early Blight... my guess would be, the aphids feeding plus sooty mold - their personal mess.
So I would remove the affected leaves and treat the aphids for long term solution.
I had aphids on my tomatoes this year. After removing the first major infestation along with the excess leaves, I used insecticidal soap spray and then I had to do some spot treatment occasionally for a week or two. Plus put out the borax baits for ants which are the cause of the problem. And I haven't found any aphids in the past week or so, I think it has worked.