lemon chicken soup w/ asparagus and orzo

Ingredients

• 1 1/2 cups chicken breast, cooked and shredded
• 6 cups chicken stock
• 1 can cream of chicken soup, low fat and sodium
• 1 teaspoon oregano, dried
• 1/2 teaspoon garlic powder
• 1 1/2 teaspoons salt (less if desired)
• 1 tablespoon black pepper
• 1 teaspoon marjoram, dried
• 1/4 teaspoon cayenne pepper (if wanted)
• 1 tablespoon lemon zest
• - juice from 1/2 lemon
• 1 medium small onion, diced
• 2 cups asparagus, cooked and chopped about 1 inch
• 1 cup orzo pasta, cooked