Preheat oven to 425 degrees Fahrenheit. Lightly grease a baking sheet with non-stick cooking spray.

Place pizza crusts on prepared baking sheet and brush with olive oil. Bake pizza crusts, uncovered, at 425 degrees Fahrenheit for five minutes.

In the meantime, mix cheeses in a small bowl. Set aside.

In a separate bowl, combine tomatoes, tomato paste, beans, corn, hot sauce and salt.

Remove crusts from the oven and divide tomato mixture evenly among the 8 crusts. Spread to within about a quarter inch of the edges and sprinkle cheeses on top.

Return to oven. Bake, uncovered, at 425 degrees Fahrenheit for 20 minutes or until cheese is melted and pizza crusts are pale brown. Let stand five minutes before serving.

Top each pizza with two to three slices of fresh avocado or a few slices of jarred hot pepper rings immediately before serving.