To prepare gremolata, place mint, pine nuts, rind and garlic in a mini chopper. Process just until combined. Add 4 teaspoons olive oil and 1/4 tsp. salt, process to combine. Set aside.
To prepare chicken, heat a large grill pan over medium-high heat. Brush 2 tsp. olive oil evenly over chicken, sprinkle chicken with salt and pepper. Add chicken to pan; cook 5 minutes on each side or until done. Remove chicken from pan, let stand 5 minutes. Serve gremolata with chicken.