In large bowl or gallon bag, combine chicken, pesto, 1 Tbsp. olive oil, lemon juice, salt and pepper. Thoroughly coat chicken and marinate in refrigerator 30 minutes to 4 hours.

In large skillet over medium heat, heat 1 Tbsp. olive oil. Add marinated chicken and sear 5-6 minutes per side, until golden and cooked through to 165 degrees F. Transfer to plate and cover.

In same skillet, add 1 Tbsp. olive oil if skillet seems dry. Sauté cherry tomatoes and artichoke hearts for 3-4 minutes, until tomatoes soften and artichokes start to brown. Stir in garlic and 2 Tbsp. balsamic vinegar glaze, scraping up any browned bits. Cook 1-2 minutes.

Return chicken to skillet, nestling it in tomato-artichoke mixture. Top with mozzarella and cover skillet 2-3 minutes until cheese is melty. Remove from heat and sprinkle with fresh basil and remaining 1 Tbsp. of balsamic vinegar glaze.

Serve immediately while warm.