Carolina Barbecued Chicken

Ingredients

• 1 cup finely chopped onions
• 1 cup finely chopped green bell pepper
• 1 cup cider vinegar
• 3 tablespoons firmly packed light or dark brown sugar
• 2 teaspoons fresh lemon juice
• 1/2 teaspoon salt
• 1/2 teaspoon dry mustard
• 1/4 teaspoon crushed red pepper flakes, or to taste
• 1/4 teaspoon freshly ground black pepper, or to taste
• One 2-pound 4-ounce chicken, skinned and cut into 8 equal pieces