Consider the attached pictures of some leaves of my pepper plant.
There are white dots on the backside of the leaf which correspond to regions of mild translucency on the face of the leaf. Further, there are small indentations on the face corresponding to the dots.
The plant in question is quite large and is currently producing many peppers. Hence, I suspect that it's due to a nutrient problem and is more likely to be a deficiency than overfertilizing. My smalle pepper plants, which get the same amount of fertilizer, are showing less/no decoloration on their leaves.
Please help me identify what nutrient is in short supply, if any, and how to remedy the deficiency. I have checked that the white dots are not scale, it's really the leaf itself that's deformed not something sitting on top. It is still plausible that it could be a fungal problem.