In a large bowl, whisk together the flour, baking powder, sugar, and salt until they're evenly combined. Getting this step right matters, since clumped baking powder can leave uneven bubbles in your batter later.
Pour in the milk, egg, and melted butter, then whisk everything together until the batter turns smooth. Stop as soon as the lumps disappear, since overmixing will make your pancakes dense instead of fluffy.
Add a few drops of orange gel food coloring directly into the batter and stir until the color is even throughout. Gel coloring works better than liquid drops here because it won't thin out your batter's consistency.
Transfer your colored batter into a squeeze bottle, then pipe a rounded pumpkin outline directly onto your heated, greased griddle. Fill in the outline with a bit more batter so the shape cooks as one solid pancake.
Let the pancake cook undisturbed until small bubbles start forming across the surface and the edges look set. This usually takes about two minutes, though your exact timing depends on your stovetop's heat.
Carefully flip the pancake using a wide spatula, then cook the other side for another minute or two until it's golden throughout. Move it to a plate right away so it doesn't overcook on the hot griddle.
Once your pancakes have cooled slightly, use mini chocolate chips or black icing to create a simple jack-o-lantern face on each one. This is the part my kids love doing themselves, so feel free to let little hands help.