Preheat the oven to 350°F. Grease a 9x13-inch baking dish. Set aside.
Arrange the pecans In a single layer on a shallow baking pan lined with parchment paper. Bake uncovered for 8-10 minutes until pecans are lightly toasted and fragrant, stirring halfway through cooking. Cool completely.
Place flour, sugar, butter, and cocoa powder into the bowl of a food processor and pulse a few times until the mixture resembles coarse crumbs. Press the mixture into the bottom of the 9x13-inch baking dish to form a crust.
Bake the crust for 15 minutes then remove from the oven and evenly sprinkle chocolate chips over the top. Cool for 30 minutes.
In a medium bowl, whisk together the eggs, brown sugar, corn syrup, melted butter, and vanilla extract. Stir in the coconut and toasted pecans. Pour into the prepared crust.
Bake uncovered for 25-30 minutes until the filling Is golden and fully set. Cool completely then chill for at least 1 hour before cutting into bars.