Start by preheating your grill to medium-high heat. This temperature is crucial for properly cooking the chicken breast and ensuring it gets those beautiful grill marks.
Once the grill is ready, brush the chicken breasts with olive oil. This not only helps prevent sticking but also enhances the flavor. Season both sides generously with salt and black pepper.
Place the seasoned chicken on the grill. Grill for about 5 to 7 minutes on the first side without moving it. This allows for nice searing.
After the first side is done, flip the chicken breasts and grill for another 3 to 4 minutes. You want the internal temperature to reach 165°F for safe consumption.
Once cooked through, remove the chicken from the grill and let it rest for a few minutes. This resting time allows the juices to redistribute, making the chicken even more tender.
While the chicken is resting, it’s time to make the Alfredo sauce. In a saucepan, combine heavy cream and butter over medium-high heat. Stir occasionally until you see small bubbles forming around the edges, but don’t let it boil.
Next, add the grated Parmesan cheese to the saucepan. Whisk quickly until the cheese melts and the sauce starts to thicken. If you’re adding garlic powder, include it now and continue whisking.
After a minute or two, the sauce should reach a perfect consistency. If it gets too thick, you can always whisk in a little more heavy cream to loosen it up.
Meanwhile, cook your fettuccine according to package directions. Make sure to salt the water for better flavor.
To serve, plate half of the prepared fettuccine on each dish. Top with the creamy Alfredo sauce, then slice the grilled chicken and place it on top of the pasta. You can garnish with more Parmesan cheese if desired.