Preheat oven to 425°F and toss trimmed green beans with minced garlic, half the olive oil, salt, and pepper on a sheet pan, then roast for 8 minutes.
Push beans to the sides, place cod fillets in the center, brush with remaining olive oil, season with salt, pepper, and lemon zest, then roast for 7 more minutes until fish flakes easily.
Meanwhile, toast the sliced almonds in a dry skillet over medium heat for 3 minutes, stirring frequently, until fragrant.
Squeeze fresh lemon juice over everything and sprinkle toasted almonds over the green beans and fish.
Serve immediately with lemon wedges on the side.
Photo: Laårk Boshoff / Unsplash