Heat Olive Oil: Heat a 10-inch (25 cm) fry pan over medium heat and add 1/3 cup (90 ml) of extra virgin olive oil.
Sauté Onions: Add the chopped onions to the hot fry pan and sauté for 5-6 minutes until lightly cooked.
Prepare Potatoes: Cut 2 lbs (800 grams) of potatoes into small bite-sized pieces (1/4 inch thick).
Add Potatoes: Add the chopped potatoes to the sautéed onions, mixing to coat them in olive oil. Fry for 20-25 minutes, stirring every 3-4 minutes.
Make Chickpea Mixture: In a large bowl, whisk together 1 cup (120 grams) of chickpea flour, 1 cup (240 ml) of water, sea salt, and black pepper until smooth.
Combine Potatoes and Mixture: Once potatoes are done, transfer them to the bowl with the chickpea mixture and mix well.
Cook Omelette: Heat the fry pan again with low medium heat, add 2 tablespoons (30 ml) of reserved olive oil, then add the potato mixture, spreading it evenly. Cover and cook for 6-8 minutes.
Flip Omelette: After 6-8 minutes, flip the omelette using a greased plate. Cook for another 6-8 minutes until golden and fully cooked.
Serve: Transfer the omelette to a serving dish and enjoy.