1 small shallot, halved lengthwise and thinly sliced
1 teaspoon red wine vinegar
2 tablespoons extra-virgin olive oil
1 pound (2 halves) boneless, skinless chicken breast
Coarse salt and freshly ground black pepper
8 ounces (2 cups) sweet cherries, pitted and halved
1 cup baby arugula

Combine shallot, vinegar, and 1 tablespoon oil and set aside. Preheat grill to medium-high. Drizzle remaining oil over chicken. Season with salt and pepper. Grill chicken until cooked through, 4 to 5 minutes per side. Let stand for 5 minutes. Toss shallot mixture, cherries, and arugula in a small bowl. Season with salt and pepper. Serve on top of chicken.