In a large mixing bowl, whisk together the sifted flour, baking powder, baking soda, cinnamon, ginger, and salt until evenly combined.
In a separate smaller bowl, whisk the eggs, then stir in the buttermilk, maple syrup, roasted pumpkin, and vegetable oil until smooth.
Pour the wet mixture into the dry ingredients and gently fold together until just combined. The batter will be slightly thick but pourable; don't overmix to keep the pancakes fluffy.
Preheat your griddle or non-stick skillet over medium heat until hot but not smoking. Lightly oil the surface with a bit of vegetable oil or non-stick spray.
Pour approximately 1/4 cup of batter onto the hot skillet for each pancake. Cook until bubbles form on the surface and the edges look set, about 2-3 minutes.
Gently flip the pancakes using a spatula and cook for another 2-3 minutes, until the second side is golden brown and the pancakes are cooked through.
Transfer the cooked pancakes to a plate and keep warm while you repeat the process with the remaining batter. Re-oil the skillet as needed.
Serve the pumpkin pancakes warm, drizzled with extra maple syrup and a sprinkling of cinnamon if desired. Enjoy their moist, fluffy texture and cozy spice aroma.