Preheat the oven to 375 degrees F (190 degrees C).

Beat brown sugar, butter, and white sugar together in a bowl until creamy. Add pumpkin, egg, and vanilla extract; beat until smooth.

Whisk flour, oats, cinnamon, baking soda, baking powder, and salt together in a separate bowl; stir into butter mixture until combined. Fold in chocolate chips.

Drop 1 to 2 tablespoonfuls dough onto baking sheets spaced 2 inches apart.

Bake in the preheated oven until edges are lightly browned, 10 to 12 minutes.