I have the same spots on my raised bed grown cherry tomatoes.

any advice?

So I never got an answer, but I think it was related to the shock from cleaning and trimming the roots (in not very sterile caution) for an extended period of time without water. It recovered nicely, with the spots not spreading to any other new leaves. They never faded from the affected leaves though. I doubt have any insects, and One been sure to keep the roots wet when changing water or nutrients or cleaning for an extended period of time, with no recurrence. I grow these