Heat the olive oil and add the salt pork, potatoes, and onion. Cook, stirring gently from time to time and scraping the bottom with a spatula, for about 20 minutes, or until the potatoes are crispy and lightly browned. Add half of the parsley or chives and the pepper (no salt is needed because of the salt pork), and pour in the beaten eggs. Cook until the underside is firm (see