Combine the crushed pineapple, dry pudding mix and yogurt. Mix well until incorporated.Pour mixture into graham cracker crust.Scatter 2 tablespoon shredded coconut over pie evenly.Place halved pineapple slices and cherries on top.Sprinkle remaining 2 tablespoons coconut over pineapple and cherries.Cover pie with plastic wrap and refrigerate at least 2 hours before serving.