Just guessing here....

Start of sun burn? Is the pod in direct sun light for long periods? If so, do you rotate your container? The pepper and plant looks very healthy.

Bill

Might not be able to tell till it progresses further, if it does at all.

If it doesn't get much worse, then it might just be bug bites, insects similar to stink bugs that have a proboscis to puncture with.

And as normal, especially if you are trying to head off bacterial + fungal issues, just keep the tops of the plants as dry as you can, no overhead wetting.