Start by grating the mozzarella cheese and set aside.
In a bowl, add the eggs, the salt, the black pepper and the sweet paprika, mix all the ingredients together very well.
After that, add parsley and chives to taste, the grated cheese, mix well again.
Get one slice of bread and dip it into this mixture.
Next, in a skillet, add the unsalted butter and stir until melted.
Add the slice of bread we prepared, top it with 2 teaspoons of the egg mixture we made, flip the bread slice, top the other side with 2 more teaspoons of the filling, fry until golden brown.
Serve.