Lemon Chicken & Spinach Orzo Soup - Everyday Chiffon

Ingredients

• 1 lb Chicken Breasts
• 2 1/2 Tbsp olive oil (Divided)
• 1 1/4 Cups Carrots (Chopped)
• 1 1/4 Cups Celery (Chopped)
• 1 1/4 Cups Yellow Onion (Medium) (Chopped)
• 1 1/4 Cups Baby Bella Mushrooms (Chopped)
• 5 Cloves garlic (Minced)
• 8 Cups Chicken Broth
• 1/2 Tsp Dried Basil
• 1/2 Tsp Dried Thyme
• 1/2 Tsp Dried Rosemary
• 1 Cup Orzo Pasta
• 1 Rind Parmesan cheese (Plus shredded parmesan for serving)
• 1 1/2 Tsp Lemon Zest
• 1/3 Cup Fresh Lemon Juice
• 5 Cups (Packed) Fresh Spinach (Roughly Chopped)
• Salt & Pepper (to Taste)