Fill a large pot with water and sprinkle in some salt, bring to a boil. Add the pasta and cook according to package instructions, reserve ½ cup of the starchy pasta water.
In a large skillet with high sides, preheat 2 Tbs oil and garlic together over medium heat, add chicken stock and bring it to a boil. Once boiling, add broccoli, cook for about 7 to 8 or minutes or until tender.
Using 1 Tbs of oil, baste one side of chicken breasts and coat with light salt and lemon pepper seasoning. Flip chicken breasts and repeat on opposite side. Add to skillet and cook 5-7 minutes on each side or until middle reaches 165 degrees.
Using a wooden spoon, smash up some of the broccoli, add the cooked and drained pasta and the butter and parmesan. Stir everything together, turn the heat up to medium-high and cook for 1 minute. If you feel like you need a bit more liquid slowly add the reserved starchy cooking water.
Serve chicken over pasta, add a few red pepper flakes to parent's bowl if desired and enjoy!