Preheat your oven to 375 degrees F.
Spread the tomato paste evenly over the two pizza slices.
Add all the ingredients except for the feta cheese, spinach, and olives.
Bake for five minutes or until the mozzarella cheese has melted.
Remove the pizza from the oven and add the olives, spinach, and feta cheese.
Return to the oven and bake for an additional 2-3 minutes or until the feta cheese has slightly melted.