Melt semi-sweet chocolate chips in a microwave-safe bowl.
Dip each pretzel into the melted chocolate, covering halfway.
Allow excess chocolate to drip off.
Place dipped pretzels on a parchment-lined baking sheet.
Melt white chocolate chips in a separate bowl.
Drizzle white chocolate over the pretzels using a fork.
Sprinkle with optional toppings like sprinkles.
Let the pretzels cool until the chocolate hardens.
Store in an airtight container at room temperature.