In a large bowl, toss the prepared chicken breasts in olive oil. Add the flour, Italian seasoning, salt and pepper and stir until completely incorporated.
In a large skillet over medium heat, melt 3 tablespoons butter and swirl to coat the pan.
Add the chicken, being sure to space evenly apart. Do not touch until the chicken appears to be almost cooked through. (About 3 minutes)
Flip over the chicken pieces and continue cooking an additional 2 minutes or until the internal temperature reads 165 degrees F.
Remove the cooked chicken from the pan and set aside.
Lower the temperature to medium low heat and add the remaining butter to the skillet. Use a spatula to scrape the browned chicken bits from the bottom of the pan.
Add garlic to the butter, cooking for 1 minute or until fragrant.
Return the chicken to the pan and add the lemon juice and fresh parsley.
Toss to fully coat the chicken in the sauce and serve immediately.
Notes
Storage - Leftover chicken can be stored in an airtight container in the fridge for up to 4 days.
Freezing - These can be frozen, but reheating chicken from frozen can dry them out a bit.
Reheating - The leftover chicken can be reheated in a skillet over medium or in a 350℉ oven until warmed. Add a little butter if they seem dry. They are also delicious cold.