Pat the chicken dry with paper towels
Season both sides with salt, black pepper, garlic powder, and optional Italian seasoning
Heat olive oil or butter in a skillet over medium-high heat
Add the chicken breasts or cutlets to the hot skillet
Cook without moving for 4 to 6 minutes per side, depending on thickness
Reduce heat to medium if the outside browns too quickly
Cook until the internal temperature reaches 165°F
Remove the chicken from the skillet and let it rest for 5 to 10 minutes
Slice the chicken into strips or bite-sized pieces
Add the sliced chicken on top of the fettuccine Alfredo before serving