Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper
In a large bowl, beat butter, brown sugar, and granulated sugar until creamy
Add eggs one at a time, mixing well, then stir in vanilla extract
In a separate bowl, whisk together flour, oats, baking soda, baking powder, and salt
Gradually mix dry ingredients into the wet ingredients until combined
Fold in chocolate chunks until evenly distributed
Scoop dough onto the baking sheet, leaving space between each cookie
Bake for 10-12 minutes until edges are golden but centers are soft
Let cookies cool on the baking sheet for 5 minutes before transferring to a wire rack