A lighter version of Olive Garden's Zuppa Toscana Soup
Cook bacon over medium to medium high heat in a large pot until cooked, drain the fat and add onion along with a sprinkle of salt, pepper, crushed red pepper flake. Cook until translucent.
Add the chicken stock, bring to a boil, and reduce heat to low, simmer for 15 minutes. (Optional step: I like thicker, creamier soups, and one trick I do with all my soups is use my immersion blender and pulse it a few times. If you don’t have an immersion blender remove about a cup or two from the pot and put it in your blender or food processor (NOT when it’s super hot!) and return it to the pot. But, if you like the thinner broth type soups you can skip this part.)
Serve in soup bowls with a sprinkle of the shredded parmesan cheese.