Let start.. it seems to be isolated to one plant. First thing first wether you are growing in soul or soilless the principles of pH always affect the vigor of plant growth. Nutrients lockout does occur in soil.. but usually to a lesser extent due to beneficial microbes releases organic acid like acetic acid (vinegar) that allow calcium and magnesium to be very bio available ie in a chelated form..

However it seems like your soil atleast in this pot is reaching its end on Nutrients especially in the form of magnesium. Why magnesium from your pics the old leaves looks like it was previously a very healthy leaf meaning calcium and magnesium was adequate to form a proper leaf without crinkles. But now the new grow and older leaves are showing yellowing spots.. signifying that it's a Mobil Nutrient that is needed with more priority in the new grow than in the older leaves.. hence the plant is pulling thr magnesium from the older leaves to help develop newer shoots.. however it still isn't enough.

You also have a onset of a potassium deficiency.. with all this I'll just say you have a big overall Nutrients.. except nitrogen.. nitrogen is very high in your soil in comparison to the other micro Nutrients