Coconut-Lime Chicken with Grilled Pineapple

INGREDIENTS

• 2 cups tequila
• 2 tablespoons lime juice
• 1 tablespoon brown sugar
• 1 teaspoon cayenne pepper
• 6 (6 ounce) skinless, boneless chicken breast halves
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• 1 (16 ounce) container sour cream
• 1/2 cup coconut milk
• 1/4 cup lime juice
• 2 tablespoons chopped cilantro
• 1 clove crushed garlic
• 1 pinch salt and pepper to taste
• 6 slices peeled, cored pineapple