In a medium bowl, whisk together the all-purpose flour, 1 1/2 teaspoons salt, and garlic powder.
Pour the buttermilk into a separate bowl and spread the panko breadcrumbs on a plate.
Dredge each chicken piece in the flour mixture to coat, then dip in the buttermilk, letting excess drip off, and finally roll in the panko until evenly coated; transfer to a platter.
Heat about 1 inch of oil in a deep frying pan over medium heat until it reaches 350°F (175°C).
Fry the chicken in small batches, leaving space between pieces and turning as needed, until golden brown and an instant-read thermometer inserted into the thickest part reads 165°F (74°C).
Use a slotted spoon or spider to transfer the cooked pieces to a paper towel–lined plate to drain.
Lightly sprinkle hot chicken with additional salt to taste and serve with your favorite dipping sauce.