Microwave chocolate bark coating in a 1-quart glass bowl at MEDIUM (50% power) 2 to 3 minutes or until melted.
Dip one half of each pretzel in melted chocolate, allowing excess to drip. Place on wax paper, and let stand until chocolate hardens.
Microwave white chocolate bark coating in a 1-quart glass bowl at MEDIUM (50% power) 2 to 3 minutes or until melted.
Dip uncoated half of each pretzel in white chocolate; let stand until chocolate hardens.