Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a large mixing bowl, combine tahini, brown sugar, and granulated sugar. Mix well with a hand mixer or whisk until smooth.
Add in the egg and vanilla extract, mixing until fully incorporated.
In a separate bowl, whisk together the baking soda, salt, and all-purpose flour. Gradually fold the dry ingredients into the wet mixture until combined.
Gently stir in the chocolate chips until evenly distributed.
Using a cookie scoop or tablespoon, scoop dough onto the prepared baking sheet, spacing them about 2 inches apart.
Lightly sprinkle sea salt on top of each cookie before baking.
Bake in the preheated oven for 10-12 minutes or until the edges are lightly golden. The centers will appear soft but will firm up as they cool.
Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.
Notes
Allow cookies to cool completely for the best texture.