How do i prepare an egg for a hermit crab to eat?

You shouldn't feed eggs to hermit crabs. A healthy diet for a hermit crab includes a variety of foods such as:

Commercial hermit crab food pellets specifically designed for their nutritional requirements

Fresh fruits like apples, bananas, and oranges

Vegetables like carrots, broccoli, and cucumber

Dried leaves from oak, maple, and apple trees

Protein sources like freeze-dried shrimp or mealworms