1 tsp chilli flakes
4 large garlic cloves, finely chopped
陆 small bunch fresh curly or flatleaf parsley, finely chopped, plus extra to serve (optional)
2 x 400g/14oz tins chopped tomatoes
400g/14oz penne pasta
salt and freshly ground black pepper
1 tbsp granulated or caster sugar
4 tbsp olive oil
15驳/陆辞锄 Parmesan, grated, to serve
2 large chicken breasts, skin removed