Grate the zucchini. Sprinkle with salt and leave it in a colander for 30 minutes to an hour. Then squeeze any extra liquid out of the zucchini with your hands and put in a large bowl.
Add the feta, eggs, semolina, pepper, nutmeg, olive oil and mix well.
Brush a baking pan (9x12) with olive oil. Add the zucchini mixture to the pan and bake for 1 hour 20 minutes at 350 degrees F. You will want to check it after an hour as different ovens bake differently. It is done when a knife or toothpick comes out clean in the middle.