In a large bowl, whisk together the pumpkin puree, neutral oil, sesame oil, eggs, pumpkin pie spice and sugar. You want it to be well combined so mix it with a whisk or spatula for a good minute or so. Next, add the flour, sesame seeds, black sesame seeds, kosher salt, baking powder and baking soda. Mix once more until mostly combined. Lastly, add most of the chocolate (reserving a few pieces for the topping) and mix until no more speckles of flour appear; being sure NOT to over-mix the batter.