Preheat oven to 350 degrees F.
Grease a 15 inch pizza pan
Prepare brownie mix according to box directions.
Pour mixed brownies into prepared pan.
Bake for 20 minutes, or until done.
Remove from oven, let cool.
Beat the cream cheese, pineapple, and sugar together in a bowl.
Use any reserved pineapple juice at this time, if needed, to soften the mixture to a good spreading consistency. (otherwise dispose of it or save if for another recipe)
Spread mixture over the cooled brownie.
Arrange the banana and strawberry slices over the cream cheese mixture.
Sprinkle with chopped nuts and drizzle with chocolate.
Slice as you would pizza to serve.