Season the chicken with items listed for chicken seasoning, Toss to combine and coat the chicken. Cook the chicken in large pot in batches, in a little olive oil until brown and cooked through. Set aside.
In the same pot, add a bit more olive oil if needed, saute the onion for a minute or two to soften them. Add the minced garlic and continue cooking for another 30 seconds.
Open the can of tomatoes, I use Brook brand whole peeled tomatoes in tomato juice, drain the juice into the pot, chop the tomatoes and add them to the pot. Add the chicken stock or the water, bring to a boil. Add the pasta then lower the heat to a simmer. Cover and cook the pasta for about 8-10 minutes, time will vary so keep an eye on the pasta, stirring once ever so often, until the pasta is cooked.
When the pasta is cooked, remove from heat and add the Parmesan cheese and mix until combined, season with salt and pepper to your liking. Pour this into a large serving dish, top with the chicken and garnish with parsley and chili flakes if desired. Serve.