01 - In a small bowl, whisk together the olive oil, lemon juice, minced garlic, salt, and black pepper until well combined.
02 - Place the chicken breasts in a shallow dish and pour the marinade over them, turning to coat evenly. Let marinate for at least 15 minutes at room temperature or up to 2 hours in the refrigerator.
03 - Preheat a grill or grill pan over medium-high heat. Lightly oil the grates to prevent sticking.
04 - Grill the chicken breasts for 5 to 7 minutes per side, or until cooked through and the internal temperature reaches 165°F. Remove from the grill and let rest for 5 minutes before slicing.
05 - While the chicken rests, brush the peach halves lightly with olive oil. Grill cut-side down for 2 to 3 minutes until charred and caramelized. Slice the grilled peaches into wedges.
06 - In a small jar, combine the extra-virgin olive oil, honey, fresh lime juice, Dijon mustard, salt, and pepper. Shake vigorously until the dressing is emulsified.
07 - In a large bowl, combine the arugula, torn mint leaves, sliced red onion, and feta cheese and toasted nuts if using. Add the sliced chicken and grilled peach wedges.
08 - Drizzle the honey-lime vinaigrette over the salad and toss gently to combine. Serve immediately, garnished with extra mint or feta if desired.