Using a large nonstick pan, heat the oil over medium heat. Sauté the onions and peppers until soft, about 8 minutes.Add the garlic, cumin, paprika and cayenne pepper and stir. Add the tomatoes and vegetable juice. Bring the contents to a boil. Decrease the heat, cover and simmer for about 8 minutes until thick. Stir occasionally.Add the spinach. Mix and allow the spinach to wilt, about 3 minutes. Add the feta cheese and stir.Using a spoon, make a well in the vegetables and sauce. Add a cracked egg into the well. Do the same with each egg.Cover and simmer until the eggs are cooked to your preference, about 4 minutes for runny eggs and 10 minutes for eggs cooked through.