Lightly grease a 10" x 15" baking sheet with olive oil.
Lightly oil a medium to large bowl for your dough to rise after kneading. Set aside.
Have the warm water in a bowl and make sure that it is the correct temperature. You can zap it in the microwave again and 'take it's temperature'.
When the water is at 100° to 110° pour in the yeast.
Stir and let stand 5 to 10 minutes.
Put the flour and nutritional yeast in a large bowl - not the oiled one.
Add salt and oil to the yeast mixture and stir.
Add to the bowl of flour.
Stir and then dump on a lightly floured cool board or counter.
Knead about 5 to 10 times until the dough is elastic. You will need to add extra flour as you knead until it is not TOO sticky. You will be able to remove your hand without dough left on your fingers and palms.
Form into a ball.
Place in your oiled bowl and turn the dough to get oil on all sides.
Cover with a clean dish towel and let rise 45 min. to 1 hour until it doubles.
Remove the dough and knead 2 to 3 times to remove the air.
Lay the ball on the prepared baking pan and push the dough close to the corners with your fingers.
Cover and let rise another hour.
Sprinkle 3 Tablespoons olive oil over the bread and smooth around.
Dimple the bread lightly with your fingertips. You don't want to lose it's 'rise'.
Sprinkle on the oregano and just a pinch more of sea salt..
Bake at 425° for 20 minutes.
Let cool a bit and then remove to a rack.