Creamy Tomato Chicken Parmesan

Name: Creamy Tomato Chicken Parmesan
Ingredients: 4 tbsp olive oil - divided; 6 boneless skinless chicken breasts; 3 tbsp minced onions; 2 tbsp minced garlic; 1 26oz box Pomi Organic Strained Tomatoes; 1 26oz box Pomi Organic Chopped Tomatoes; 2 cups heavy cream; 2 cups shredded parmesan - divided; 4 cups loosely packed baby spinach leaves - torn into smaller pieces; salt & pepper to taste