Coat the bottom of a frying pan with olive oil. Saute pepper and onion until translucent. Add spinach and toss until just wilted. In a separate bowl, mix eggs and yoghurt. Coat a pie pan with a thin coating of olive oil. Swirl almonds around the pan until it forms a nice, uniform coating. Place the vegetable mix in the pie pan. Add grated cheddar, followed by egg mixture. Bake at 375 degrees for about a 45 – 50 minutes or until a knife inserted comes out clean.