uniformly spotted leaves on outdoor plants

Hi I'm new here and have a late outdoor issue that I would appreciate some input on. My plants are only weeks from being done but I have increasing spotted leaves on the whole plants, not just the top or bottom. That would leave me to believe it is a nutrient problem instead of a pest. I have dealt with most of the pests here and have never seen this. I looked at a website and it looks most like a MN deficiency which doesn't make sense this time of year. Please take a look at the pic and see what you think. Thanks

My leaves are starting to look very similar to yours. Spotted, curling, dry/brittle tips, yellowish/green color over plant. Only difference is my leaf tips are curling under. The spots look the same. I'm trying to correct calcium def. if it works, I'll let you know.

Also... Leaves naturally yellow and die towards the end of the plant's life. I'm not saying what you got going on is supposed to be happening, but it always could be a possibility, that it's doing exactly what it's supposed to do.

Classic nute burn. If they're in containers, you should give them a flush and stop feeding.