In a large Dutch oven heat the olive oil and sauté the onion until softened.
Add the garlic cook 30 seconds.
Add the Italian seasoning, salt, pepper tomato paste, chicken stock and canned tomatoes to the pot.
Bring to a boil then reduce to a simmer.
Add the tortellini, chicken and spinach leaves and cook until pasta is tender (about 10 minutes).
Remove from the heat and stir through the heavy cream.
Ladle into bowls and sprinkle with parmesan, if using.
