Neil Perry’s chicken in crazy water (acqua pazza)

Ingredients

• vine-ripened tomatoes, peeled, deseeded and chopped
• large garlic cloves, thinly sliced
• flat-leaf parsley, finely chopped
• small red chillies, deseeded and chopped
• extra virgin olive oil
• sea salt
• boneless chicken thighs, skin off
• cooked soft polenta, to serve