Prepare the Chicken: Cut the chicken breasts in half lengthwise and pound them to an even thickness.
Create Coatings: Whisk together eggs in one bowl and combine Parmesan cheese, flour, Italian seasoning, salt, and pepper in another bowl.
Cook the Chicken: Heat olive oil in a skillet over medium-high heat and cook each piece of breaded chicken for about 4-5 minutes per side until golden brown.
Make the Sauce: Melt butter in another saucepan, sauté minced garlic until fragrant, then add lemon juice, chicken broth, and ground black pepper.
Combine & Garnish: Pour the lemon butter sauce over the chicken and garnish with parsley and lemon slices if desired.