Steps
1. Preheat a non-stick pan over medium-high heat.
2. Fry the egg in the pan using some cooking oil.
3. In the meantime, spread the ketchup over one of the slices of bread.
4. Top the ketchup with the lettuce leaves, cooked chicken and sliced egg.
5. Add the grated cheese and close the sandwich with the other slice of bread.
6. You can either grill the sandwich in a sandwich maker or in the same pan you used to cook the egg.
7. Enjoy your delicious sandwich!