Please help me save my chilli!

Bought this Basket of Fire chilli in the middle of a Perth summer which I now realise wasn’t my best move. It had heaps of chillis to begin with and looked healthy enough, but was pretty rootbound in very dry soil so I repotted it after a couple of weeks into Bunnings potting mix in a pot with a drainage hole. It’s now looking very sad and producing real stunted looking chillis and barely any of them. I’ve hit it with seasol, been watering frequently etc. Is there still hope or should I cut my losses? Seems to be getting worse and worse