Mix buttermilk and egg together.
In another bowl, add flour.
In a third bowl, whisk together bread crumbs, tempura, and seasonings.
Heat oil over medium high heat.
Add 10-12 pieces of chicken into flour, then into the buttermilk mixture, next into the bread crumb mixture, and finally into pan.
Fry chicken until each piece is golden brown and cooked thoroughly.
Remove chicken from pan and place on a plate lined with paper towels to absorb any excess oil.
Serve hot and spoon into single serving bowls or into one large serving dish, then drizzle with sauce and enjoy.