Pork Chop au Poivre

Name: Pork Chop au Poivre
Ingredients: 2 (1 1/2-inches-thick) bone-in pork chops, preferably rib chops (about 1 pound each); 1 1/2 teaspoons kosher salt, divided, plus more as needed; 1 medium shallot; 2 cloves garlic; 2 tablespoons whole peppercorns, preferably a mix of black, white, pink, and red; 1/2 medium lemon; 1 tablespoon unsalted butter; 2 tablespoons Cognac or brandy; 1/2 cup beef or chicken broth; 1/2 cup heavy cream; 1/2 teaspoon Dijon mustard; 2 teaspoons neutral oil, such as vegetable, canola, or avocado oil