Lamb Chops with Blackberry Pan Sauce and Arugula

Name: Lamb Chops with Blackberry Pan Sauce and Arugula
Ingredients: 8 lamb loin chops, about 2 1/2 pounds; kosher salt for sprinkling, plus 1 teaspoon, divided; freshly ground black pepper; 2 tablespoons canola or vegetable oil; 1 large shallot, diced (about 1/3 cup); 1/2 teaspoon finely chopped rosemary leaves; 1 6 oz. package blackberries, halved (or quartered if very large), divided; 1/2 cup red wine; 2 tablespoons butter, cut into small pieces; 6 cups (about 4 oz.) loosely packed arugula; 5 teaspoons freshly squeezed lemon juice; 3 tablespoons olive oil