"That which we call a rose, by any other word would smell as sweet."

huevo frito is ... 'fried egg', regardless of what the frying-pan is called (a skillet is nothing other than a frying pan) or whether is made of cast iron or pressed steel or ... whatever.

"Egg Skillet" is a common menu item of eggs fried in cast iron: It does imply that it is going to come with more than just eggs-for example potatoes, bacon, and/or toast, so it may or may not be appropriate-but it is something people will probably recognize and understand.