Preheat Oven: Start by preheating your oven to 375°F (190°C).
Season Chicken: Season the chicken cubes with salt and black pepper to taste.
Coat Chicken: Dip each chicken piece in beaten eggs, then roll in panko or breadcrumbs. Ensure each piece is well-coated.
Bake Chicken: Arrange the coated chicken on a parchment-lined baking sheet. Bake for 12-15 minutes or until golden brown. Consider turning the pieces midway for even browning.
Prepare Sauce: While the chicken bakes, mix all sauce ingredients in a small saucepan. Whisk well and cook on low heat until the sauce thickens slightly.
Combine and Serve: Once the chicken is baked, transfer it to a bowl. Pour the prepared sauce over the chicken and gently toss to coat evenly. Garnish with sesame seeds and scallions or chives before serving.