Grilled Lamb Chops with Herb Sauce

Name: Grilled Lamb Chops with Herb Sauce
Ingredients: 1 large clove garlic; 1 medium lemon; 1 bunch fresh parsley stems (reserve the leaves and tender stems for the herb sauce below); 1 handful fresh mint leaves; 1 large sprig fresh rosemary; 1/3 cup olive oil; 1 teaspoon kosher salt; 1/4 teaspoon freshly ground black pepper; 1/4 teaspoon red pepper flakes; 8 Frenched lamb rib chops or lamb loin chops (1 1/2 to 2 pounds total); Vegetable oil, for cooking; Handful pea leaves, for serving (optional)