Rinse the fish and pat dry with paper towels.Optional: Soak fish in cold lemon water for 10 to 15 minutes. This helps to remove any fishy smell/taste. [Even very fresh fish has a fishy smell] I use this process most of the time when I am working with any kind of fish. Cover fish with cold tap water and juice one lemon in the water.
In a bowl, add the fish, olive oil, thyme, lemon zest, black pepper and salt. Coat the fish with the seasoning.
Line a half sheet pan with parchment paper. Place the fish in a single layer, leaving space in between each. Please the lemon slices in between the fish.
Bake the fish in the preheated oven for 15 minutes. (No flipping necessary). Note: The fish will be moist but will flake easily when done.
Plate and serve with your favorite side(s). Enjoy!