Arugula Salad with Grilled Chicken and Apricots

2 (6-ounce) skinless, boneless chicken breast halves
1 tablespoon minced fresh parsley
2 teaspoons minced fresh tarragon
1/2 teaspoon salt, divided
1/4 teaspoon freshly ground black pepper
Cooking spray
3 tablespoons olive oil
4 teaspoons white wine vinegar
Dash of freshly ground black pepper
4 cups baby arugula
4 cups gourmet salad greens
3 apricots (about 8 ounces), pitted and thinly sliced
1/3 cup thinly vertically sliced red onion

Prepare grill to medium-high heat.

Place chicken between 2 sheets of heavy-duty plastic wrap; pound each piece to 1/2-inch thickness using a meat mallet or small heavy skillet. Sprinkle chicken with parsley, tarragon, 1/4 teaspoon salt, and 1/4 teaspoon pepper.

Place chicken on grill rack coated with cooking spray; grill 4 minutes on each side or until done. Transfer to a plate; cool to room temperature.

Combine oil, vinegar, remaining 1/4 teaspoon salt, and dash of pepper in a small bowl, stirring with a whisk.

Combine arugula, greens, apricots, and onion in a large bowl. Pour vinaigrette over arugula mixture; toss well to coat. Place about 2 cups arugula mixture on each of 4 plates. Cut chicken breast halves crosswise into thin slices; top each serving evenly with chicken. Serve immediately.