Hanger Steak with Spicy Lemon Couscous

Name: Hanger Steak with Spicy Lemon Couscous
Ingredients: 1 pound hanger or skirt steak; Kosher salt, freshly ground pepper; 3 tablespoons olive oil, divided, plus more for drizzling; 2 garlic cloves, thinly sliced; 1/4 teaspoon crushed red pepper flakes; 4 small carrots, peeled, cut into 1/4-inch slices; 1 small fennel bulb, cut into 1/4-inch wedges; 1/4 lemon, ends trimmed, seeded, finely chopped (with skin); 1 1/2 cups low-sodium chicken broth; 3/4 cup couscous; 1/2 cup green olives (such as Castelvetrano), pitted, halved; 1/4 cup sprigs cilantro