Step 1

Season chicken with salt, pepper, and zest. Heat 3 tablespoons oil in a large straight-sided skillet on high; add chicken and cook 4 minutes. Flip; add garlic, 1 teaspoon ginger, beans, and 1/3 cup water. Season with salt and pepper. Cover and simmer until chicken is just cooked through, 6 to 8 minutes. Coarsely chop cilantro.

Step 2

Bring 1 cup water to a boil in a small saucepan. Add a pinch of salt and couscous; remove from heat, cover, and let stand 5 minutes. Cut cucumbers into 1/2-inch pieces and tomatoes into 1/2-inch wedges. Toss both with 1/4 cup cilantro and remaining 1 teaspoon ginger and 3 tablespoons oil; season with salt and pepper. Fluff couscous with a fork; stir in remaining 1/4 cup cilantro. Slice chicken; serve, with beans, cucumber salad, couscous, and lemon.