Prep the Chicken: Trim 1½ lbs of chicken tenders, then cut each tender in half crosswise to create bite-sized pieces.
Marinate: In a large bowl, combine buttermilk, garlic powder, onion powder, smoked paprika, salt, and pepper. Add the chicken pieces and toss to coat. Cover and refrigerate for 15 minutes or up to 2 hours.
Bread the Chicken: Remove the chicken from the marinade, letting excess drip off. Coat each piece in flour, dip it into whisked egg, and press it into panko breadcrumbs. Ensure each piece is fully coated.
Fry the Chicken: Heat 1 inch of avocado oil in a large skillet over medium heat (350°F). Fry the chicken bites in batches for 3-4 minutes per side, until golden brown and fully cooked (internal temperature of 165°F). Drain on a wire rack.
Toss in Sauce or Drizzle: Toss the fried chicken bites in bang bang sauce for a saucy finish, or drizzle the sauce over them for a crispier texture.
Serve: Garnish with parsley or cilantro, and serve warm with extra bang bang sauce for dipping.