Chili plant leaf turning purple

[ali123]

As title suggest i have 10-15 plant of chili they are producing great amount of chilies but recently their leafs are turning from green to purple and leafs of plant look like underwater but soil of pots is moist. should i be worry about is it some kind of deficiency or just due to weather change

[ali123]

izhar bhai your assistance in this matter will be highly appreciated

[Izhar]

Just due to weather change... but better to add some potash as it increases plant immunity

[ali123]

Just due to weather change... but better to add some potash as it increases plant immunity

thanks izhar bhai