Mix together flour, sugar, baking powder, cinnamon, and baking soda in a large bowl.

Whisk together milk, eggs, and melted butter in a separate bowl until well combined. Pour into flour mixture; whisk until blended.

Heat oil on a griddle over medium heat. Drop batter by 1/4 cup spoonfuls onto the hot griddle. Cook until bubbles form and the edges are dry, 3 to 4 minutes. Flip and cook until browned on the other side, 2 to 3 minutes. Remove to a plate and keep warm while you cook remaining batter.