Start by heating a skillet over medium heat. Add the ground chicken and cook it thoroughly, breaking it apart as it browns. Season it with salt, pepper, and Italian seasoning. Make sure the chicken is no longer pink and has a bit of golden color for extra flavor. Once cooked, transfer it to a bowl and set it aside.
In the same skillet (don’t wash it — those chicken bits add flavor!), melt the butter over medium heat. Toss in the minced garlic and sauté for about a minute until fragrant. Slowly pour in the heavy cream and stir constantly. Let it simmer gently for 3–4 minutes to thicken slightly. Now stir in the shredded mozzarella and Parmesan. Keep stirring until the sauce turns smooth, creamy, and irresistibly cheesy.
Bring the cooked chicken back into the skillet. Stir everything together so the Alfredo sauce coats each piece of chicken perfectly. Let it simmer for a couple of minutes to meld all the flavors. If it feels too thick, add a splash of cream or milk to loosen it.
Toast your sandwich buns until golden. This helps hold the creamy mixture without getting soggy. Spoon a generous portion of the Alfredo chicken onto the bottom half of each bun. Sprinkle with fresh parsley or a bit more Parmesan, then place the top bun.