This quick Italian dinner is quite satisfying after a long day.
In a medium pot of boiling salted water, cook pasta according to package instructions. Meanwhile, in a large nonstick skillet, heat 1 teaspoon oil over medium. Pat cod dry with paper towels and season with salt and pepper; cook until lightly browned and opaque throughout, about 8 minutes, flipping once. Transfer to a plate and tent with foil. Add 1/2 teaspoon oil and kale to pan, season with salt and pepper, and cook until kale begins to wilt, 2 minutes. Add 2 tablespoons water, cover, and cook until kale is tender, 6 minutes.
Drain pasta and add to pan with kale. Stir in pinch of red-pepper flakes and lemon zest. Season to taste with salt and pepper and toss to combine. Transfer to a bowl, drizzle with oil, and top with cod; serve with lemon wedge.