Cut the chicken breast into small bite-size pieces if not already cut. Pat dry with a paper towel.
Season the chicken with salt, black pepper, and Italian seasoning. Mix well.
Heat olive oil and butter in a large skillet over medium-high heat.
Add the chicken pieces to the skillet. Cook for 5–7 minutes, stirring sometimes, until the chicken is golden and fully cooked.
Add the minced garlic. Cook for about 30 seconds until fragrant.
Pour in the fresh lemon juice and chicken broth. Stir well to combine.
Add the lemon zest and mix gently.
Let the sauce simmer for 2–3 minutes until slightly reduced and coated over the chicken.
Taste and add extra salt or black pepper if needed.
Turn off the heat and sprinkle chopped fresh parsley on top.
Serve warm with rice, pasta, mashed potatoes, or vegetables.