Chard with Bacon-Citrus Sauce

In a large cast-iron or other heavy skillet, cook bacon over medium heat until crisp; drain on paper towels. Discard all but 1 tablespoon of drippings. Cut bacon into small pieces., Add chard to drippings; cook and stir just until wilted, 5-6 minutes. Add remaining ingredients; cook 1-2 minutes, stirring occasionally. Top with bacon.