01 - Preheat oven to 425°F. Line a large baking sheet with parchment paper or aluminum foil.
02 - Pat fish thoroughly dry inside and out using paper towels. Make diagonal cuts through the skin 3-4 times on each side to promote even cooking and crisping.
03 - Rub olive oil over entire fish surface, including cavity interior. Generously season with coarse sea salt and black pepper on all surfaces.
04 - Place lemon slices, fresh thyme sprigs, rosemary sprigs, and sliced garlic cloves into the fish cavity, packing loosely.
05 - Transfer fish to prepared baking sheet. Arrange so skin faces upward without excess oil or juices covering the surface to ensure proper crisping.
06 - Roast in center of oven for 20-25 minutes until skin achieves golden crispiness and flesh flakes easily when tested with a fork.
07 - Let fish rest for 2-3 minutes. Transfer to serving platter, sprinkle with chopped parsley, and arrange lemon wedges alongside.