Pic one shows nitrogen over dose, pic 2 and 3 show potassium and calcium deficiency, which is not surprising since they are in such small containers (which will also be limiting their growth).
Transplant into much bigger pots with fresh soil and your plants will be much healthier and happier!
It looks like your plant is lacking magnesium.
I would add CalMag to the feeding program and the problem should resolve itself 🤔
The already affected leaves will probably die off.