Heat the oil in a non-stick frying pan over a medium heat. Fry the onion and chorizo for 3 minutes, then add in the cherry tomatoes.
Add the sundried tomatoes and olives to the pan. Stir and then make four indents in the ingredients. Crack an egg into each indent and top with the spinach leaves. Lower to a medium-low heat, cover with a lid or plate, and cook fo