Prepare your workspace by lining a baking sheet with parchment paper.
In a microwave-safe bowl, combine the semi-sweet chocolate chips and the coconut oil (if using).
Microwave the chocolate in 30-second intervals, stirring after each interval, until melted and smooth. This usually takes about 1-2 minutes.
Hold a pretzel rod by one end and dip it into the melted chocolate, coating about two-thirds of the pretzel.
Lift the pretzel out of the chocolate, allow any excess chocolate to drip back into the bowl, and then place it on the prepared baking sheet.
Before the chocolate sets, sprinkle crushed nuts or sprinkles over the chocolate-dipped part of the pretzel to add flavor and decoration.
Repeat the dipping and decorating process with the remaining pretzel rods.
Once all pretzels are dipped and decorated, let them sit at room temperature for about 10-15 minutes or refrigerate for quicker setting.
After the chocolate has hardened, the pretzels can be transferred to a serving dish or stored in an airtight container.