Step 1: Preheat your oven to 350°F (175°C).
Step 2: In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and sea salt. Set this mixture aside.
Step 3: In a large mixing bowl, cream together the unsalted butter, light brown sugar, and granulated sugar until light and fluffy, about 2-3 minutes.
Step 4: Beat in the eggs, one at a time, and then mix in the vanilla extract until well combined.
Step 5: Gradually add the dry ingredient mixture to the wet ingredients, mixing until just combined.
Step 6: Gently fold in the chocolate chips and 1 cup of the sprinkles until evenly distributed.
Step 7: Drop rounded balls of dough onto a prepared baking sheet, spacing them about 2 inches apart.
Step 8: Sprinkle the remaining 1/2 cup of sprinkles on top of the dough balls.
Step 9: Bake for 10-12 minutes, or until edges are lightly golden.
Step 10: Remove cookies and sprinkle with sea salt if desired. Cool on the baking sheet for about 5 minutes before transferring to a cooling rack.