Line a baking sheet with parchment paper and arrange 8 pretzel sticks in a star shape.

Microwave dark chocolate in a bowl in 20-second intervals, stirring after each, until fully melted and smooth.

Transfer to a zip-top bag and snip off a small corner.

Start at the center of the pretzel star and pipe the melted chocolate in circles over the pretzels to form a web.

Place an edible candy eye in the center.

Refrigerate until set, about 30 minutes.