Rust spots

Hey everyone,

Been growing this throughout the outdoor. About two weeks ago I saw a couple of rust/orange spots starting to develop on my fan leaves. I did some research on them but can’t really zero in on the problem. I don’t think it’s rust fungus because nothing seems to come off when I touch the spots. Any idea what it could be?

Hmmm … looks like septoria . Haven’t seen that for sometime.
Treat with a good garden safe fungicide .. remove affected leaf.

Looks like something splashed on it and burned from sun?

Interesting, it has spread to other leaves but it is only one side of the plant. It’s noticeable on probably 4-5 leaves

Here’s another close up. Do you think it could be a calcium deficiency?