In small bowl whisk together marinade for chicken, pour over chicken and set aside to marinate.When ready, remove chicken from marinade and cook on barbecue for 14 – ۱۸ minutes, turning once.When done, remove, let rest 5 minutes, then slice.Fill large saucepan half full of water and bring to a boil over high heat.When boiling, drop in asparagus and parboil for 3 minutes.Drain and immediately rinse with cold water. Make vinaigrette: In small bowl whisk mustard, ketchup and vinegar.Slowly add oil whisking constantly.Whisk in dried basil. Prepare spinach, tear if needed and put in a large salad bowl along with fresh basil.Add 3 – ۴ tbs dressing and mix well. Add tomatoes, asparagus, olives and feta and toss once or twice.Add chicken and drizzle with 2 – ۳ tbs dressing and serve, remaining dressing on the side.