Steps
1. Pat the chicken dry and season both sides with salt and pepper. Heat the olive oil in a small oven-safe skillet over medium heat.
2. Brown the chicken for about 3 minutes on each side, then transfer it to a plate. Add the grapes and garlic to the skillet; cook for 2 minutes, stirring gently.
3. Stir in the balsamic vinegar and rosemary. Return the chicken to the skillet and roast until the chicken is cooked through and the grapes have softened and begun to wrinkle, about 12–15 minutes.
4. Meanwhile, bring the broth to a boil in a small saucepan. Stir in the couscous, cover, remove from the heat, and let stand for 5 minutes. Fluff with a fork.
5. Serve the chicken and grapes over the couscous, spoon over the pan juices, and finish with feta.