6 free-range chicken thighs , skin on, bone in; plain flour; olive oil; 100 g quality chorizo; 1 onion; 4 cloves of garlic; ½ a bunch of fresh flat-leaf parsley; 6 rashers of higher-welfare pancetta or smoked streaky bacon; 2 litres organic chicken stock; 2 large pinches of saffron; 1 heaped teaspoon smoked paprika; 500 g paella rice; 2 small squid , from sustainable sources, optional; 2 handfuls of fresh or frozen peas; 10 large raw shell-on king prawns , from sustainable sources; 500 g mussels , (cleaned) from sustainable sources, optional; 1 lemon