To make the crumbed chicken, heat the oil in a deep frying pan.
Season the flour with the oregano, paprika and salt and place in a bowl.
Mix together the mayonnaise and the hot water in a separate bowl.
Slice the butterflied chicken in half, resulting in two even, thin pieces of chicken.
Coat the chicken first in the flour, then in the mayonnaise mixture and again in the flour.
Carefully place in the hot oil and fry until golden brown and cooked through. Remove from the pan and drain on kitchen paper before continuing the process until all the chicken is cooked.
To make the mayo, combine all the ingredients and mix well.
To build the burgers, spread each half of the sesame buns with a little of the lemon mayo. Top with one piece of chicken, mozzarella and another piece of chicken before finally adding the seasoned avocado. Sandwich the tops of the buns and serve immediately.