Preheat the oven to 350°F. Line two baking sheets with parchment paper or silicone baking mats.
Combine flour, baking soda, baking powder, salt, and cinnamon in a large bowl. In a separate bowl, whisk together the melted butter, sugar, whole egg, egg yolk, and vanilla, until well combined.
Stir the wet ingredients into the dry ingredients. Stir in the oats, raisins, and chocolate chips, folding into a tight batter. Set the dough aside for 20 minutes to allow them to set.
Use a spring-loaded cookie scoop to scoop into 16 balls about 2 tablespoons each, and roll lightly in barely damp hands to make them round. Spread out on the prepared baking sheets and bake until puffed and golden, 10 to 11 minutes (they will continue to bake on the pans as they cool). Let cool on the pans for 5 minutes before transferring to a wire rack to cool completely.