Place the boneless skinless chicken breasts between two pieces of plastic wrap. Use a meat mallet or rolling pin to gently pound the chicken to an even thickness, about 1 inch thick.
In a mixing bowl, combine the Italian seasoning, garlic powder, salt, MSG (if using), black pepper, and paprika. Mix well to ensure the spices are evenly distributed.
Drizzle the chicken breasts with canola oil and melted butter. Then, generously sprinkle the herb mixture over both sides of the chicken, pressing it in gently to adhere.
Heat a large skillet over medium-high heat. Once hot, add a little more canola oil if needed to coat the bottom of the skillet.
Place the seasoned chicken breasts in the skillet. Cook for about 6-7 minutes on one side, or until golden brown. Flip the chicken and cook for another 6-7 minutes, or until the internal temperature reaches 165°F (75°C).
During the last minute of cooking, squeeze half a lemon over the chicken for added flavor. You can also toss the squeezed lemon halves into the skillet for extra zest.
Remove the chicken from the skillet and let it rest for a few minutes. Garnish with freshly chopped parsley and serve with your favorite sides.