Season chicken generously with salt and pepper. It’s your first line of flavor defense, don’t skip it.
Heat olive oil in a large skillet over medium-high heat. Sear chicken 4–5 minutes per side until golden and cooked through. Remove and set aside.
In the same skillet, add minced garlic for 30 seconds until fragrant. No burnt garlic drama—keep an eye on it.
Stir in pesto, then whisk in heavy cream. Bring to a gentle simmer and cook 2–3 minutes until the sauce thickens slightly.
Return chicken to the pan. Spoon sauce over the top and cook another 1–2 minutes to reheat the chicken and meld flavors.
Stir in Parmesan cheese and lemon juice if using. Taste and adjust salt or pepper as needed.
Garnish with fresh basil or parsley. Serve hot and watch it disappear fast.