Preheat your oven to 375°F (190°C).

In a large skillet, heat olive oil over medium heat. Season chicken breasts and cook for 5-7 minutes on each side until golden brown.

In a large pot of salted water, cook pasta according to package instructions until al dente, about 8-10 minutes.

Steam the broccoli florets until bright green and tender, about 3-4 minutes.

In a mixing bowl, combine drained pasta, diced chicken, steamed broccoli, and Alfredo sauce until well coated.

Grease a baking dish and pour the mixture into it, spreading evenly. Top generously with shredded Parmesan cheese.

Bake in the oven for 25-30 minutes until the top is golden brown and bubbly.

Let cool for a few minutes before serving hot, preferably with garlic bread or a fresh side salad.