Broiled, Butterflied Chicken - Alton Brown

Ingredients

• 1 1/2 teaspoons black peppercorns
• 3 cloves garlic, minced
• 1 1/2 teaspoons kosher salt, divided
• 1 large lemon, zested
• 1 teaspoon chopped parsley
• 1/4 cup olive oil
• 1 medium onion, quartered
• 4 large carrots, cut into 3-inch chunks
• 3 stalks celery, cut into 3-inch chunks
• 1 (3- to 4-pound) broiler/fryer chicken
• 1 cup red wine
• 1 cup chicken broth