Start by cutting your chicken into small pieces and seasoning them generously with salt and pepper.
Add your olive oil (or neutral oil) to a large pan on the stove and heat over medium heat.
Once the oil is hot, add in the chicken.
Cook for about 3 minutes, stirring every so often. It's okay if the chicken isn't cooked all the way through yet - it will cook more later.
Next, add in the mashed garlic and sauté for about 1 more minute.
Then, add in all of your other ingredients: the broccoli, onion powder, salt, pepper, parsley, Italian seasoning, flour, broth, milk, and pasta. Toss to combine. Make sure to mix everything well, so that the pasta doesn't stick to the bottom of the pan. The pasta won't be fully covered, but that's okay.
Bring your mixture to a gentle boil. Then, reduce the heat to low, cover, and simmer for 15 minutes.
Remove from the heat and stir in the parmesan cheese.
Taste, adjust seasonings as needed, then serve and enjoy!