Preheat oven to 450~F. Saute or bake chicken breast. Cool. Cut into 1/4" wide strips. Spray or grease a 12" pizza pan. Saute onions and garlic briefly in the olive oil and add them to the tomatoes, sa and basil. Spread the tomato mixture over the top of the crust. Lay chick strips down over the tomatoes. Top with fontinella and mozzarella cheeses. Add the sliced mushooms and sprinkle with Parmesan cheese. Bake e at 450 degrees F. for 8 minutes, or until cheese is melted and crust is piping hot