Pre heat the oven to 400 degrees. Using a 10x15 pan, spread and pre bake the pizza crust ( usually about 5 mins, but follow the directions on the package).
While the crust is baking, melt the two sticks of butter (I have used light stick butter and it worked fine!). Pour the cake mix on top of the butter and blend. In a separate bowl, blend the brown and white sugar
When the crust is complete, spread the butter cake mix over the crust. Sprinkle the chocolate chips (about 3/4 of the bag) on top and lightly press them in.
Sprinkle the sugar over the top of the pizza. Bake the pizza for about 7 minutes at 400 degrees. If you want a crispier top, turn the broiler on briefly, but be careful not to burn it.