I planted some Tabasco peppers this year for the first time and they were doing great except the leaves are turning yellow and falling off. They are getting the same nutrients as my other peppers and it is only happening to the Tabasco. Any help would be great.
It has outgrown it's cup....it is concentrating on fruiting instead of thriving.
 I have several of the same.....watering was not my issue but spent too long in solo cups like yours.
 Over watering looks to be adding to your the problem though.