Cut the chicken breast into even cubes and toss with salt and pepper.

Beat the egg in one bowl, put the flour on a plate, and mix the crushed hazelnuts with breadcrumbs on another. Dredge the chicken cubes first in flour, then egg, then the hazelnut-breadcrumb mixture.

Heat the olive oil in a pan and fry the chicken bites over medium heat until golden on all sides and cooked through.

Mix the honey, mustard and lemon juice in a small bowl and drizzle over the hot chicken bites before serving.