Italian Asparagus Rice Salad

• 4 chicken breast (halves)
• 350 gr rice (cooked)
• 350 gr asparagus
• 190 gr torn spinach leaves
• 160 ml vinaigrette salad dressing
• 60 gr italian-style breadcrumbs
• 60 gr onion (sliced red)
• 40 gr walnuts
• 20 gr parmesan cheese
• 16 ml olive oil