Heat oven to 425°F, line two rimmed sheet pans with parchment and brush them lightly with oil.
Cut chicken into 32 similar two-bite pieces and toss with buttermilk, salt and garlic powder.
Combine cracker crumbs, breadcrumbs, paprika and pepper in a shallow bowl.
Coat each drained chicken piece firmly in crumbs and arrange with space between pieces.
Drizzle or spray with remaining oil and bake for 9 minutes.
Turn the nuggets and bake 7 to 9 minutes more until crisp and the centers reach 165°F.
Serve hot with ketchup or honey mustard.