Charred plums make this nutty salad a summer standout. Ingredients: 4 6-oz boneless, skinless chicken breasts 2 tbsp. plus 1 tsp olive oil 1/4 tsp. salt 1/4 tsp. pepper 4 red plums, cut into 1-inch wedges) 2 scallions, thinly sliced 6 c. baby arugula 1/2 c. …