You can also use a thick slice of ham or a few slices of bacon, if you prefer.
A nonstick pan is best, but it must be at least stainless steel. Do not use cast iron.
The eggs or watermelon can be salted to taste, but the Parmesan usually lends enough salt to the eggs, in my opinion, and the pan-grilled watermelon stands on its own without salt. Have this on its own or with toast or cereal.
The watermelon can be had with or without yolk; a bite of watermelon on a toast point with a drizzle of the parmesan egg yolk can be quite scrumptious.
Can be separated into two smaller servings, especially if toast or another side is added.