Combine pineapple juice, grilled citrus juice, tequila, schnapps and triple sec into shaker. Shake. Strain into glass. Garnish with grilled fruit slices.
Grilled Citrus Juice: Cut in half; 1 grapefruit, 1 lemon, and 1 lime place on grill until grill marks appear. Strain juice into small bowl after grilling to remove any charred pieces, yields about 6 ounces juice.