1. Cut the escalopes into 4 pieces (if they are not thin enough, flatten them with a rolling pin between 2 sheets of plastic wrap).
2. Put flour on a plate, beaten egg with salt and pepper on a second plate, and finally a mixture of equal parts grated Parmesan cheese and breadcrumbs on a third plate.
3. Dip the pieces of escalope in the flour (remove excess flour if necessary), then in the beaten egg, and then in the Parmesan/breadcrumb mixture.
4. Dip the escalopes again in the beaten egg and in the breadcrumb/Parmesan mixture.
5. Put the escalopes in the fridge for 15 minutes (this is very important otherwise the crust won't hold during cooking).
6. Dice the deseeded tomatoes.
7. Season them with olive oil, salt, and a drizzle of balsamic vinegar.
8. Heat a mixture of butter and olive oil in a pan.
9. When the pan is hot, sear the escalopes on both sides.
10. When they are golden brown, reduce the heat and let them cook for another 5 minutes.
11. Arrange the escalopes on plates.
12. Sprinkle the diced tomatoes (without too much juice) and garnish with arugula.
13. Drizzle with lemon juice and enjoy.