Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
Spread the pretzel twists evenly on the prepared baking sheet. Bake for 5-7 minutes, just until they are warm and slightly crisp. Remove from the oven and set aside.
In a medium saucepan over low heat, melt the caramels with the heavy cream, stirring until smooth. Remove from heat.
Pour the caramel mixture over the pretzels, spreading evenly with a spatula.
In a microwave-safe bowl, heat the chocolate chips in 30-second intervals until melted and smooth, stirring after each interval.
Drizzle the melted chocolate over the caramel pretzel layer, using a spatula or the back of a spoon to spread it into an even layer.
If desired, sprinkle the chopped pecans or peanuts on top of the chocolate layer. Finally, sprinkle sea salt over the entire bark.
Refrigerate the bark for about 1-2 hours, or until set. Once set, break into pieces and serve.