Steps
1. Preheat the grill or a grill pan over medium heat.
2. Season the chicken breast with olive oil, salt, and pepper.
3. Grill the chicken for about 6-7 minutes per side, or until cooked through. Let it rest.
4. Halve and pit the peach, then grill the peach halves for about 2-3 minutes on each side until grill marks appear.
5. In a bowl, combine the mixed greens and balsamic vinegar, tossing to coat.
6. Slice the grilled chicken and peach.
7. Assemble the salad by placing the greens on a plate, topping with chicken and peach slices, and adding optional feta and walnuts if desired.
8. Drizzle with additional balsamic vinegar if preferred and serve immediately.