1Season the halibut with the zest of one lemon, 1 tablespoon thyme, and 2 tablespoons parsley. Cover, and refrigerate at least 4 hours.
3Toss the potatoes with 2 tablespoons olive oil, 1 teaspoon thyme, and 1 teaspoon salt. Place the potatoes in a roasting pan, cover with foil, and cook 30 to 40 minutes, until they’re tender when pierced. (Depending on their size, age, and variety, the cooking time will vary.)