Place the cooked egg yolks in a bowl. Using a fork, work the mayonnaise, mustard, vinegar, chives, and salt and pepper into the yolks to form a smooth paste. Taste. Place 1/2 of this mixture in a small pastry bag with a large star tip. To the remaining mixture, add the jalapenos and season with Hot pepper sauce. Fill 6 of the egg halves with the basic filling. Fill the pastry bag with the jalapeno filling. Fill the remaining egg white halves. Top with paprika. Place on a platter on the radicchio leaves, and parsley sprigs.