Malt Vinegar-Glazed Roast Chicken

Ingredients

• 3/4 cup malt vinegar
• 1/4 cup mild-flavored (light) molasses
• 2 tablespoons honey
• 1 teaspoon fennel seeds
• 1/2 teaspoon coriander seeds
• 1/4 teaspoon crushed red pepper flakes
• 1 dried pasilla or ancho chile, stemmed, seeded
• 10 whole black peppercorns
• 1 1-inch piece of cinnamon stick
• 1/2 bay leaf
• CHICKEN
• 1/2 cup (packed) light brown sugar
• 1/3 cup kosher salt plus more for seasoning
• 1/4 cup malt vinegar
• 8 sprigs fresh thyme
• 1 4-pound chicken, backbone removed, quartered, or 4 lb. breasts and whole legs
• Freshly ground black pepper
• 2 tablespoons vegetable oil