Whisk the eggs, oil, vanilla, melted chocolate and granulated sugar together in a large bowl until incorporated.
Whisk together the flour, baking powder, chicory and salt in a separate bowl.
Add the dry ingredients to the wet and stir until combined. Cover the bowl with plastic wrap and place in the refrigerator to chill for 2 hours.
Preheat the oven to 350 degrees F. Line a sheet tray with parchment paper. Add the powdered sugar to a small plate.
Using an ice cream scoop, scoop up about 2 tablespoons of dough and roll in the powdered sugar until thickly coated, then place on the prepared sheet tray. Repeat with the remaining dough, spacing each cookie about 2 inches apart.
Bake until set around the edges, 10 to 12 minutes. Let cool slightly, then remove from the sheet tray to cool on wire racks.