Season the sliced chicken with 1 teaspoon seasoned salt, ½ teaspoon black pepper, ½ teaspoon paprika, and ½ teaspoon garlic powder on both sides.
Heat 2 tablespoons olive oil in a large skillet over medium-high heat. Add the chicken and cook for 3 to 4 minutes per side, until golden and cooked through. Remove the chicken from the skillet and set aside.
Reduce the heat to medium and add 3 tablespoons butter to the same skillet. Once melted, stir in 4 minced garlic cloves and cook for 30 seconds, just until fragrant.
Sprinkle 1½ tablespoons flour over the butter and garlic. Stir constantly for 1 minute to cook out the raw flour taste.
Slowly pour in 1½ cups chicken broth, whisking as you go to keep the sauce smooth. Let it simmer for 3 to 4 minutes, until slightly thickened. Stir in ½ cup heavy cream, 1 teaspoon onion powder, and 1 teaspoon Italian seasoning. Lower the heat and simmer gently for 2 minutes.
Add 1 cup grated Parmesan cheese, stirring until melted and the sauce is smooth and creamy.
Return the chicken to the skillet and spoon the sauce over the top. Let everything simmer together for 5 minutes, until the chicken is warmed through and the sauce thickens slightly.
Sprinkle with bacon bits if using, and finish with chopped parsley before serving.