Brothy Sherried Pork Chops with Butter Beans and Almond Gremolata

Name: Brothy Sherried Pork Chops with Butter Beans and Almond Gremolata
Ingredients: 4 thick bone-in pork rib chops (9 oz. each); Kosher salt and freshly ground black pepper; 3 Tbsp. olive oil, plus more as needed; 4 small onions, peeled and halved; ⅔ cup oloroso sherry, or other dry or off-dry fortified wine; 2½ cups chicken stock; 4 rosemary sprigs; 1 bay leaf; One 15½-oz. can butter beans, drained and rinsed; ¼ cup blanched almonds, finely chopped; 2 Tbsp. olive oil; 2 garlic cloves, finely chopped; 2 tsp. finely grated lemon zest; ¼ cup plus 2 Tbsp. finely chopped parsley leaves