Preheat your oven to 400°F (200°C) to ensure it's hot enough for that perfect bake.
Roll out the pizza crust onto a pizza pan and poke holes with a fork to prevent bubbling. Bake it in the preheated oven for about 5 minutes to give it a head start.
In a mixing bowl, combine the melted butter with the yellow cake mix until smooth and well incorporated, creating a rich batter.
In another bowl, mix together the granulated sugar and brown sugar until uniform; this blend will add sweetness and texture on top of your dessert pizza.
Spread the cake mix-butter mixture evenly over the pre-baked crust, making sure to cover it completely. Then sprinkle milk chocolate chips on top and gently press them into the mixture for an even distribution of chocolatey goodness.
Sprinkle the sugar mixture over the assembled pizza (avoiding the edges), then bake in your preheated oven for 10-12 minutes until golden brown and deliciously aromatic. Let cool for about 5 minutes before slicing into warm pieces and serving!