Preheat oven to 350°F (175°C).
In a 9-inch oven-safe skillet, melt the butter over low heat.
Remove from heat and whisk in brown sugar and granulated sugar until well combined.
Stir in the pumpkin puree and vanilla extract.
Add the flour, pumpkin pie spice, baking soda, and salt directly to the skillet; stir until just combined.
Fold in 1/2 cup of the chocolate chips.
Spread the dough evenly in the skillet and sprinkle the remaining 1/4 cup of chocolate chips on top.
Bake for 18 to 22 minutes, or until the edges are golden brown and the center is still slightly soft.
Allow to cool for 10 minutes before serving warm.