Coat a 3-quart rectangular baking dish with cooking spray; set aside. For filling, in a large bowl stir together the artichoke hearts, cream cheese, green onions, Parmesan cheese, feta cheese, and pesto.
Place about 1/4 cup filling onto each tortilla. Top with sweet pepper strips; roll up. Arrange tortilla rolls in the prepared baking dish. If desired, lightly coat tortilla rolls with additional cooking spray. Bake, uncovered, in a 350 degree F oven about 15 minutes or until heated through.
Cut each tortilla roll into thirds and arrange on a serving platter. Serve with Yogurt-Chive Sauce. Makes 24 appetizers.