- Heat grill on high; set grill rack 4 to 6 inches above heat source. 
- Season chicken with salt and pepper; coat with olive oil. 
- Grill chicken, turning once, until it reaches an internal temperature of 165f. 
- 5-8 minutes each side. 
- Transfer chicken to a cutting board. 
- Coat peaches with olive oil; spray skin side up on grill grates; grill, turning once until juicy (not mushy) 
- In a salad bowl, whisk mustard, vinegar, oil, and 1 tbsp water. 
- Toss with arugula. 
- Divide arugula among 4 plates. 
- Slice chicken and peaches; distribute evenly among plates. 
- Credit: Self.com