Preheat the oven to 400 degrees and put a rack on the top setting.
Mince 2 garlic cloves and slice 1 lemon. Set aside.
Transfer 1 whole fish to a cutting board and score the fish’s skin by lightly cutting three diagonal marks on each side of the fish.
Check the cavity and see if it’s large enough. If you want more space for ingredients, cut alongside the bottom edge of the fish.
Generously season the fish all over with Kosher salt, on the skin and inside the cavity.
Rub olive oil all over the fish.
Stuff the fish cavity with the minced garlic, lemon slices, and a handful of parsley from 1 parsley bunch
Transfer your fish to a lined baking sheet or a wire rack with a lined baking sheet. The wire rack isn’t necessary but it will make your fish skin crispier.
Transfer the baking sheet with the fish to the top rack of the oven.
Cook at 400 degrees for 20-25 minutes or until flakey. You can test if your fish is ready with a fork before taking it out of the oven.
Serve your fish whole on the table with lemon wedges.