In a bowl, mix flour, garlic powder, paprika, dried parsley, salt, pepper, and crushed red pepper flakes.
Heat oil in a deep fryer or pot to 375°F (190°C).
Dredge calamari rings in the seasoned flour mixture. Then place in the buttermilk, flipping to coat both sides. Dredge in the flour again on both sides.
Fry in batches until golden brown, about 2-3 minutes.
Remove and drain on paper towels.
Garnish with chopped parsley and serve with lemon wedges, serve and enjoy!