Start by adding a tortilla into a skillet over low heat, cover it with the eggs. Place them gently so they don’t break.
Season them with salt and pepper.
Finely chop the parsley and sprinkle some of it over the eggs.
Now, grate the mozzarella cheese and spread half of it over the eggs too, add oregano to taste and cover it all with another tortilla.
Cover the skillet and let it cook for 5 to 7 minutes.
Meanwhile, cut the tomato into round slices and set aside.
After the indicated time, flip the tortilla and cover it with the tomatoes. If the yolk is still runny, let it cook for a bit longer before flipping it.
Season the tomatoes with salt and spread the grated Parmesan cheese over each tomato. Get the rest of the mozzarella cheese and sprinkle all over it.
Top it all with some more parsley.
Cover the skillet again and let it cook for 3 to 5 minutes.
Serve.