Preheat oven to 350°F and set aside prepared graham cracker crust. In a mixer fitted with a paddle attachment, beat together cream cheese, sour cream, sugar, egg, lemon juice and zest, vanilla extract and nutmeg until mixture is smooth and creamy consistency.
Stir in crushed pineapple and coconut. Pour into prepared graham cracker pie crust.
Bake at 350°F for 25-30 minutes or until top is set. Let pie cool completely before frosting.
To make topping:
Using a stand mixer fitted with a whisk attachment, beat heavy whipping cream and powdered sugar together on medium-high speed until soft peaks start to form. Spread over chilled pie.
Notes
Optional - Garnish pie with extra toasted coconut. Store pie in the refrigerator. Substitution: Cool-Whip may be substituted for the prepared whipping cream topping.