Prep the Chicken: Start by preheating your air fryer to 380°F (190°C). While the air fryer is heating, season the chicken breasts with olive oil, garlic powder, paprika, salt, pepper, and Italian seasoning. Make sure the chicken is evenly coated.
Air Fry the Chicken: Place the seasoned chicken breasts in the air fryer basket in a single layer. Air fry for 18-20 minutes, flipping halfway through. The chicken should be golden brown and cooked through (internal temperature should reach 165°F or 74°C). Once done, remove the chicken and set it aside to rest.
Cook the Pasta: While the chicken is cooking, bring a large pot of salted water to a boil. Add the fettuccine and cook according to the package instructions until al dente. Drain the pasta and set it aside.
Make the Alfredo Sauce: In a medium saucepan, melt the butter over medium heat. Add the minced garlic and sauté for about 1 minute until fragrant. Stir in the heavy cream and bring to a simmer. Once simmering, reduce the heat and whisk in the Parmesan cheese. Continue to stir until the sauce is creamy and smooth. Season with salt, pepper, and lemon juice to taste.
Combine the Dish: Slice the air-fried chicken into strips. Add the cooked pasta to the saucepan with the Alfredo sauce, tossing it to coat the noodles in the creamy sauce. Top with the sliced chicken and serve immediately.