Grilled Redfish with Onions – Moveable Feast

Ingredients

• 6 8-oz. (approx.) redfish, striped bass, or haddock fillets, skin and scales on, pin bones removed
• 1/4 cup olive oil; more for brushing
• 1 tsp. ground dried red chile flakes
• Kosher salt and freshly ground black pepper
• 4 large cloves garlic, very thinly sliced
• 2-1/2 lb. (about 3 medium) Vidalia onions, peeled and left whole
• 2 large lemons, 1 juiced (about 1/4 cup), the other cut into wedges
• 3 Tbs. thinly sliced chives
• Coarse sea salt, such as fleur de sel, for serving
• 1/4 cup chopped fresh flat-leaf parsley