Preheat oven to 350F and line the baking pan with parchment paper. Lightly coat with non-stick cooking spray.
In a large mixing bowl, whisk together eggs, coconut sugar, and almond butter until smooth.
Add grated zucchini and vanilla extract and mix to combine.
Stir in oat flour, baking powder, and kosher salt. Fold in chocolate chips.
Transfer batter to prepared pan and sprinkle extra chocolate chips on top.
Bake for 27 to 30 minutes, until edges are browned and center is set.
Remove from oven and cool for 30 minutes.
Lift bars from pan using parchment paper edges and let cool completely.
Slice into 12 squares and finish with flaky salt.