Make the vegan buttermilk mixture. Combine the dairy-free milk and apple cider vinegar together in a bowl and set aside. In a large bowl combine the flour, baking powder, baking soda, salt, chocolate chips and whisk. together until a thick batter is formed. Pour the buttermilk mixture, vanilla, and syrup in the large bowl. Whisk until a batter is formed. Heat a large pan on medium heat. Lightly butter it and scoop 1/ 4 of a cup of pancake batter on the pan. Cook pancake until you see bubbles break the surface then flip (around 2 minutes). Cook each pancake until golden brown. Top with nut butter, chopped chocolate, and syrup and serve immediately.