Cut the chicken breasts into 1x1-inch cubes and set aside. Cut a bunch of broccoli into florets and set aside.
Bring a large pot with water to boil. Transfer 10 oz ziti pasta and cook according to the instructions until al-dente.
When the pasta is almost cooked, add broccoli florets into the cooking pasta and cook for 3-4 minutes. When done, drain all the water.
While the pasta is cooking, preheat a large pan over medium/high heat and add 2 tbsp olive oil.
Add cubed chicken, season with salt and pepper, and cook for about 7-10 minutes, or until the meat is cooked through. Then scoop all the cooked chicken out of the pan into a plate and set aside.
Low the heat to medium. In the same pan, melt 3 tbsp butter. Add 3 tbsp all-purpose flour and whisk until well combined for about 1 minute.
Add 1 ½ cups chicken broth and 1 cup heavy cream, then whisk again until the butter/flour mixture is dissolved.
Add the seasoning (1 tsp salt, ¼ tsp black pepper, ½ tsp onion powder, ½ tsp garlic powder, ½ tsp dried oregano, and ¼ tsp red pepper flakes). Whisk and continue to whisk until the sauce gets thicker, about 7-10 minutes.
Then add ½ cup grated Parmesan cheese and whisk again until well combined.
Add cooked pasta and broccoli and toss them well, so everything is coated with the sauce.
Serve and enjoy!