In a bowl sift the chickpea flour, salt, all purpose flour and powdered sugar.
Add olive oil, one spoon at the time and mix with hands until it gets together( you may not need to use all the olive oil). Once the dough gets together, stop adding olive oil. The dough obtained at this point can be a little hard and crumbly, knead it until it become soft, roll it into a ball and cover it with plastic wrap.
You can replace the ground roasted sliced almonds with sesame seeds or ground pistachios (optional).