Preheat the oven to 350°F and line a large baking sheet with parchment paper.

In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.

In a large bowl, add the olive oil, granulated sugar, and brown sugar. Whisk until well combined.

Add the egg, egg yolk, and vanilla extract and whisk until fully incorporated.

With a silicone spatula, fold in the dry ingredients until just combined. The dough will be quite sticky.

Fold in the chocolate chunks or chips. Be careful not to overmix.

Use a 3 tablespoon cookie scoop to portion the cookies and place them 2 inches (5 cm) apart on the prepared baking sheet.

Bake for 12-14 minutes until the edges are set and the centers look slightly underdone and soft.

Sprinkle with flaky sea salt and let cool on the baking sheet for 5 minutes before transferring to a wire rack to continue cooling.