Heat oven to 375°F. Lightly spray cookie sheet with cooking spray. Unroll dough into 2 long rectangles; press perforations to seal. Cut each rectangle into 12 squares. Place squares on cookie sheet.
Top each square with 1/4 teaspoon sweet-and-sour sauce. Layer each square with cheese, ham, more cheese and the pineapple.
Bake 11 to 12 minutes or until edges are golden brown. Serve warm. Store in refrigerator.