Preheat oven to 375F. Line baking sheet with parchment paper.
In a stand mixer, cream together butter and sugars until smooth, about 2-3 minutes.
Add in pumpkin, eggs, and vanilla. Cream again, making sure to scrape down bowl.
Add flour, baking soda, baking powder, cinnamon, pumpkin pie spice, and sea salt. Beat together until just combined.
Stir in chocolate chips and 1 cup of toffee bits.
Chill dough for 1 hour.
Using a 3 T. scoop, scoop dough onto parchment paper, leaving about 2 inches between each cookie.
Add extra toffee bits to a small bowl and press the tops of each scoop of cookie dough into it and place back onto the parchment paper.
Bake for 11-13 minutes, until sides are lightly browned. (The middle may look uncooked, but that is okay, they continue cooking when taken out of the oven and will be perfect!)
Once out of the oven, sprinkle with flaky sea salt if desired.