Stir together flour, garlic powder, salt and yeast in a medium bowl. Add the olive oil to flour mixture and lightly mix. Dissolve squid ink in the warm water and add to the flour mixture, and mix with a fork until it comes together into a shaggy dough. Use your hands to work the loose flour into your dough while in the bowl until its mostly incorporated. Turn it out on a floured surface and knead lightly, forming the dough into a ball. Clean and dry the bowl you used to mix the dough. Oil the bowl and place the dough in it and roll to coat the dough with oil. Cover with plastic wrap and set aside to double in volume. About 2 hours.
While dough rises, grate cheese, prepare mushrooms skulls toppings, and balsamic glaze.
When dough has doubled, remove from bowl and cut into 4 equal pieces and shape into aball pinching edges together. Push in a circular motion to form a taut ball. Repeat with theremaining pieces. Brush each with oil, cover with plastic wrap and let rest for 10 minutes.(Note: Only 2 of the 4 are pictured below)