Heat 3/4 inch oil to 325°F in a deep 12-inch skillet over medium heat.
Meanwhile, season ribs with 3/4 teaspoon salt and 1/2 teaspoon pepper. Put flour, eggs, and panko in 3 separate shallow bowls. Dredge ribs in flour, then coat with egg, letting excess drip off, and panko.
Fry ribs in batches, turning once, until golden brown and cooked through, 7 to 8 minutes per batch. Transfer first batch to a paper-towel-lined baking sheet and keep warm in oven. (Return oil to 325°F between batches.)
Make sauce while ribs fry: Stir together sauce ingredients. Serve ribs with sauce.