Combine the dry ingredients: In a large bowl, whisk together the flour, brown sugar, baking powder, baking soda, cinnamon, ginger, nutmeg, and salt. Break up any brown sugar lumps.

Mix the wet ingredients: In a separate bowl, whisk the egg, pumpkin puree, buttermilk, melted butter, and vanilla until smooth and evenly combined.

Make the batter: Pour the wet mixture into the dry ingredients. Stir gently with a rubber spatula just until no large pockets of dry flour remain. The batter should be thick and scoopable but still spread slightly on the skillet. Do not overmix.

Add the chocolate chips: Fold in the chocolate chips, reserving a small handful for topping if desired. Mix only until they are evenly distributed.

Rest the batter: Let the batter rest for 5 minutes. It should thicken slightly as the flour hydrates. If it becomes unusually stiff, stir in 1 tablespoon (15 ml) buttermilk at a time until it is scoopable.

Preheat the skillet: Heat a large nonstick skillet or griddle over medium-low to medium heat. Lightly grease it with a small amount of butter or oil. The surface should be hot enough for a drop of batter to sizzle gently without browning immediately.

Portion the pancakes: Scoop about 1/4 cup (60 ml) of batter for each pancake onto the skillet, leaving enough space between them to flip comfortably. If desired, sprinkle a few reserved chocolate chips over the top of each pancake.

Cook the first side: Cook for about 2 to 3 minutes, until bubbles appear across the surface and the edges look set. Because pumpkin batter is thicker and darker than standard pancake batter, watch the edges and bubbles rather than relying only on color.

Flip carefully: Slide a wide spatula underneath each pancake and flip once. Cook the second side for about 1 1/2 to 2 minutes, until puffed and cooked through. The center should feel springy rather than wet.

Adjust the heat as needed: If the pancakes become dark before the centers cook, reduce the heat to medium-low. If they remain pale and take much longer than 3 minutes on the first side, increase the heat slightly.

Keep cooked pancakes warm: Transfer finished pancakes to a wire rack or warm plate. Avoid stacking them tightly for long periods because trapped steam can soften the edges.

Serve: Serve warm with maple syrup and optional whipped cream, extra chocolate chips, and a light sprinkle of cinnamon.