You can use your favorite gluten-free sugar cookie baking mix in place of Pillsbury, adjusting the butter/water content if the mix isn't a comparable size.
If making the coconut whipped cream ahead, refrigerate in an airtight container. Remove from fridge and allow to warm up to a chill temperature - not cold or room temperature. Beat for 1-2 minutes until fluffy again.
Depending on how you decorate the pizza, you can use more or less fresh fruit.