1: Preheat oven to 350°F (175°C).
2: In a mixing bowl, combine melted salted butter, granulated sugar, and brown sugar.
3: Add the egg and vanilla extract, mix until well combined.
4: In a separate bowl, whisk together the AP flour, kosher salt, baking soda, and baking powder.
5: Gradually add the dry ingredients to the wet mixture and mix until just combined.
6: Fold in the chocolate chunks, Halloween candy, and pretzels if using.
7: Drop spoonfuls of dough onto a baking sheet lined with parchment paper.
8: Bake for about 10-15 minutes, or until the edges are golden.
9: Allow to cool slightly before transferring to a wire rack.
