In a large bowl mix the dry ingredients: flour, sugar, baking powder, baking soda, salt, and spices.
Whisk the wet ingredients together in a separate bowl: sourdough discard, milk, pumpkin purée, egg, oil, and vanilla.
Combine wet and dry ingredients and stir until just combined. Let batter rest for 10 - 15 minutes.
Preheat a skillet over medium or medium-low heat and lightly grease with oil or non-stick spray.
Cook the pancakes: Scoop about ¼ cup of batter onto the hot skillet. Cook for 2–3 minutes until bubbles form and edges set. Flip and cook the second side until golden brown.
Serve warm with your favorite toppings like maple syrup, chocolate chips, or fresh fruit.