Scrub potatoes; prick several times with fork. Place potatoes on microwavable plate. Microwave on High for 15 to 17 minutes or until fork-tender.
Meanwhile, in medium bowl, mix chicken, cheese and tomatoes.
Split each potato in half lengthwise; place on microwavable plate. Mash each potato slightly. Sprinkle each with garlic-pepper blend; top with sour cream. Spoon 1/2 cup chicken mixture on each potato. Sprinkle with bacon pieces. Microwave on High for 2 to 3 minutes or until hot and cheese is melted. Serve warm.