Using a food processor place spinach and process until it becomes a paste. Add the Olive Oil and process a few seconds. Scrape down the sides as necessary.
In a large bowl mix flour, spinach paste, salt, and garlic powder. Mix in oil. Then add the water and mix/knead until the dough is smooth. Cover bowl with a towel and let sit for approximately 45 minutes.
Divide dough in six equal portions.
With generous amounts of flour on work surface, roll out with a rolling pin or just spread out with your hands (like tossing a pizza crust) and cook on a non-stick pan set between medium and low heat. The tortilla should cook on each side for about 25-35 seconds (it's done when small brown spots appear.)