Preheat oven to 350°F. Line a baking sheet with parchment paper.
In a large bowl mix the melted coconut oil, brown sugar and espresso powder. Add in the egg and vanilla and mix.
Place a large sieve over top of the bowl and add the chickpea flour, cocoa powder, baking soda and salt. Stir the dry ingredients through the sieve into the wet ingredients below.
Remove the sieve and mix just until combined. Add the chocolate chips and mix.
Roll a level tablespoon of cookie dough into a ball and place about 12 on a cookie sheet. Bake 8 minutes then transfer to a cooling rack.
Notes
Store in a tightly sealed container on the counter for up to 1 week or freeze for up to 3 months.