In a large bowl, whisk together the dry ingredients: flour, sugar, baking powder, baking soda, and salt.
In a separate bowl, whisk the wet ingredients: buttermilk, egg, melted butter, and vanilla extract until smooth.
Pour the wet ingredients into the dry ingredients. Gently mix until just combined—be careful not to overmix. Fold in the chocolate chips.
Heat a non-stick pan or griddle over medium-low heat and add a small amount of butter. Scoop about ¼ cup of batter per pancake onto the pan.
Cover with a lid and let cook for 3–4 minutes, or until bubbles form and the edges look set. Make sure there's a gap opening with the lid. Flip and cook uncovered for another 2–3 minutes, or until golden brown and fully cooked through.
Enjoy warm with maple syrup, extra chocolate chips, or your favorite toppings!