1. Preheat oven to 375 degrees. Spray a 9x13-inch glass baking dish with cooking oil spray. Rinse the flounder under cool water and arrange in the pan.
2. Whisk together the olive oil and garlic. Then pour over the flounder. Place a spring of thyme on each piece of flounder.
3. Salt, to taste, with sea salt.
4. Slide the baking dish into the preheated oven and bake for 12-15 minutes, until the fish flakes easily with a fork.
5. Serve immediately with lemon wedges.