Olive Potato Frittata

• 8 eggs
• 2 potatoes
• 2 garlic (cloves)
• 1 onion
• 65 gr pitted ripe olives (sliced)
• 30 ml olive oil
• 20 gr provolone (finely shredded)
• 12 gr snipped oregano (fresh)
• 1 gr salt divided
• 1 gr pepper