DIRECTIONS
Place a large shallow baking pan in middle of oven.
Preheat oven to 500-degrees.
Cut 3 deep slits (down to bone) crosswise on each side of fish and put fish on a tray. Rub fish with 2 TBSP. oil.
Cut a garlic clove in half and rub all over skin of fish.
Thinly slice all garlic and insert into slits and inside fish.
Squeeze lemon juice over both sides of fish and season with salt and pepper.
Quickly brush hot baking pan with remaining TBSP. of oil and transfer fish to pan (the pan should be hot enough to sizzle).
Roast fish in middle of oven until just cooked through, 18 to 20 minutes.
To serve, remove top fillet by cutting through skin along top edge of backbone and along belly.
Carefully slide a large metal spatula between backbone and fillet and invert onto a platter.
Pull out backbone, starting from tail end, and discard.
Transfer bottom fillet to platter.