Place oven rack in the center of the oven, and preheat oven to 400 degrees F.
Remove frozen pastry sheets from box and paper wrappings. Thaw pastry sheets at room temperature for about 40 minutes or until pastry unfolds easily, but pastry is still cold. Unfold pastry on a lightly floured surface, and remove any additional paper wrappings. Cut each sheet into 9 pieces by cutting down the fold lines, then cutting each row into three equal pieces.
Line two cookie sheets or baking sheets with silpats or parchment paper, and place 9 pastry squares on each baking sheet.
Spoon 1 teaspoon pizza sauce or sour cream into the center of each pastry square, and spread to a thin layer, leaving about a 1-inch space along each side. Sprinkle each square with ½ tablespoon shredded cheese, and top with sliced red onion and red pepper. Generously sprinkle each with Italian Seasonings.
Bake in 400 degree oven for 13-17 minutes, rotating trays halfway through baking time, until the pastry is golden brown and puffed. Carefully remove from oven, place on a serving tray, and garnish with fresh herbs. Devour.