Preheat oven to 325℉.
Whisk together dry ingredients in a bowl: flour, baking soda, salt, cinnamon, nutmeg, and cloves. Set aside.
Beat together the melted and cooled butter, pumpkin puree, brown sugar, and granulated sugar with a handheld mixer or stand mixer until fully combined.
Add egg, yolk, and vanilla; beat to combine.
On low speed, beat the dry mixture into the wet mixture, adding a little at a time, until just combined. Stir in the chocolate chips by hand.
Roll dough into balls about 2 TBSP each and place on parchment lined baking sheets. Bake until edges are just set, about 14-16 minutes, rotating the sheets halfway if you are baking more than one sheet at a time.
Let the cookies rest on the baking sheets for about 10 minutes, then transfer to a cooling rack. Let cool before serving. Cookies will be slightly delicate when hot but will firm up as they cool.