For a quick, easy, and delicious meal, make this salad for supper in under 30 minutes.
In a large pot of boiling salted water, cook pasta according to package instructions. Drain.
Meanwhile, in a large bowl, whisk together lemon zest, lemon juice, and olive oil; season with salt and pepper. Add pasta, arugula, basil, capers, mozzarella, and red-pepper flakes. Toss to combine and season with salt and pepper.