Scrub potatoes; prick several times with a fork. Place potatoes 1 inch apart on a microwave-safe rack or on paper towels. Microwave at HIGH 14 to 17 minutes, rearranging once; let stand 2 minutes.
While potatoes cook, place chili in a small saucepan, and cook over medium-high heat until thoroughly heated, stirring occasionally.
Cut an X to within 1/2-inch of bottoms of baked potatoes. Squeeze potatoes to open; fluff with a fork. Spoon chili evenly onto potatoes; sprinkle with cheeses. Top each with 1/4 cup tomato, 2 tablespoons sour cream, and 1 tablespoon cilantro.