Pastrami Spiced Pork Chops with Braised Vegetables

Name: Pastrami Spiced Pork Chops with Braised Vegetables
Ingredients: Olive oil, for cooking; 2 yellow onions, sliced; Kosher salt and freshly ground black pepper; 3 Yukon gold potatoes, quartered; 2 carrots, cut into quarters; 1 small head red cabbage, core trimmed and sliced; 16 ounces sauerkraut; 2 cups apple cider; Four 1-pound bone-in pork chops; Grainy mustard, for serving; Minced fresh chives, for serving; 1/2 cup kosher salt; 1/2 cup coarsely ground black pepper; 1/4 cup celery seeds; 2 tablespoons garlic powder; 2 tablespoons smoked paprika; 2 tablespoons cracked coriander seeds; 2 tablespoons cracked mustard seeds