Preparations:

• Whisk two eggs, set aside.
• Warm pan on medium-high heat.
• Add 1/2 Tbsp olive oil and warm, but not to the point of smoking.
• Add tomatoes, olives and all the spinach. Sauté together until spinach is wilted. 
• Remove ingredients from pan and transfer to a separate dish.
• In same pan, warm remaining 1/2 Tbsp olive oil until warm.
• Add eggs to pan and cook as you would a normal omelette. 
• Add all cooked ingredients to one side of the omelette.
• Sprinkle some of the feta inside 
• Fold omelette and sprinkle rest of feta on top.
• Serve warm.