(2 fl. oz./60 ml) olive oil, or as needed • large new potatoes, about 2 lb. (1 kg) total weight, peeled and cut into 1 1/2-inch (4-cm) chunks • semicured chorizo sausage • yellow onion, chopped • red bell or piquillo pepper, seeded and chopped • garlic cloves, minced • pimentón dulce (sweet Spanish smoked pepper) • small fresh red chilli, seeded and minced • Fine sea salt and freshly ground pepper • chopped fresh flat-leaf parsley