Preheat oven to 350 degrees F. Line 2 baking sheets with parchment paper.
In a stand mixer bowl or with a handheld mixer and bowl, add butter, brown sugar, and granulated sugar and cream together on high speed.
Decrease speed to medium and add eggs, one at a time, then vanilla, beating well between each.
In a separate bowl, mix together pistachio flour, all-purpose flour, baking powder, baking soda, and salt.
Add dry ingredients to wet ingredients, gently stirring together. Fold in chocolate chips and pistachios. Optional: cover bowl and place in refrigerator for 30 minutes to chill.
Scoop out 2 tablespoons of dough and place evenly spaced on baking sheet.
Bake 12-14 minutes until edges turn golden brown. Remove from oven, sprinkle with sea salt, and cool on wire rack.