Heat olive oil in a large skillet over medium heat. Season the chicken breasts with garlic powder, then cook for 6-7 minutes on each side until golden brown and cooked through. Remove from the skillet and let rest.
In the same skillet, melt butter over medium heat. Add minced garlic and sauté for 1-2 minutes until fragrant. Pour in the heavy cream and bring to a gentle simmer.
Gradually whisk in the freshly grated Parmesan cheese until it melts and the sauce is smooth. Sprinkle in freshly cracked black pepper, adjusting to your taste.
Meanwhile, cook the fettuccine according to package instructions in a pot of salted boiling water. Drain and reserve a little pasta water, then add to the Alfredo sauce.
Slice the rested chicken into strips and add it to the sauce along with the pasta. Toss everything together gently, adding a splash of reserved pasta water if needed to achieve your desired creaminess.
Divide the Chicken Alfredo Pasta among plates, sprinkle with chopped parsley and additional Parmesan for a delicious finish.
Notes
Serve with a side of garlic bread for extra indulgence.