Prepare the chicken by cutting it into bite-sized pieces.
Set up a dredging station with flour, beaten eggs, and breadcrumbs.
Season the flour with salt and pepper.
Coat the chicken pieces in flour, dip in egg, and then roll in breadcrumbs.
Heat oil in a deep frying pan over medium heat.
Fry the chicken pieces in batches until golden brown.
Prepare the Bang Bang sauce by mixing mayonnaise and sweet chili sauce.
If desired, stir in sriracha for extra heat.
Toss the fried chicken pieces in the sauce until evenly coated.
Garnish with chopped green onions and serve immediately.