Pre-heat oven to 350°F. Line baking sheet with parchment paper or baking mat.
Unroll dough sheet. (If using crescent rolls, unroll dough and press perforations together to seal.) Spread pesto over dough to within 1/4 inch of edges. Arrange roasted peppers on top.
Starting with long side, roll up rectangle, press edge to seal. With sharp knife, cut roll into 20 (1/4" thick) slices. Place slices cut side down on prepared pan. Sprinkle with grated parmesan cheese.
Bake 14 to 18 minutes or until edges are golden brown. Immediately remove from cookie sheet. Serve warm.