In a large bowl, whisk together the flour, cocoa powder, sugar, baking powder, and salt.
In another bowl, combine the milk, egg, melted butter, and vanilla extract.
Pour the wet ingredients into the dry ingredients and mix until just combined.
Heat a non-stick skillet over medium heat and lightly grease it.
Pour 1/4 cup of batter onto the skillet for each pancake.
Cook until bubbles form on the surface, about 2-3 minutes.
Flip the pancakes and cook for an additional 2 minutes until golden brown.
Repeat with the remaining batter, adjusting heat as necessary.
Serve warm with desired toppings, such as whipped cream or syrup.
Enjoy your delicious chocolate pancakes!