Whisk flour, baking soda, baking powder, cinnamon, pumpkin pie spice, and salt until nicely combined. Set the bowl aside.
Toss in your blender: pumpkin, oil, egg, brown sugar, and milk. Blend at high speed for about 40 to 50 seconds until mixed. (Or use a handheld mixer or your own fingers).
Pour the wet ingredients (Step 2) into the bowl from Step 1 and gently whisk them together. Scrape the bowl thoroughly, but a few small lumps are fine. Optional: add chocolate chips.
Heat your skillet or electric griddle over medium heat, setting it to about 375°F. Coat it well with nonstick spray or butter.
Pour about ¼ cups of batter (for each batch of pancakes) into your skillet. Cook till the edges firm up and the telltale bubbles start popping up on the surface (2 to 3 minutes). Then, flip them over and cook until both sides are golden brown (1 to 2 minutes). Grease up the griddle or skillet between batches.
Serve them hot off the skillet or griddle with your favorite toppings.