01 - Pat chicken breasts dry with paper towels and season both sides generously with salt and black pepper.
02 - Heat olive oil in a large skillet over medium-high heat until shimmering. Add chicken breasts and sear for 3–4 minutes per side until golden brown. Remove chicken from pan and set aside on a plate.
03 - Add red onion to the same pan and sauté for 2 minutes until slightly softened. Add minced garlic and cook for 30 seconds until fragrant, being careful not to burn.
04 - Stir in cherry tomatoes and cook for 3–4 minutes until they start to release juices and soften slightly.
05 - In a small bowl, whisk together balsamic vinegar, chicken broth, and honey until combined. Pour mixture into the pan, using a wooden spoon to scrape up any browned bits from the bottom.
06 - Return the chicken breasts to the skillet, nestling them among the vegetables. Sprinkle with thyme and chopped basil. Reduce heat to low, cover, and simmer for 12–15 minutes until chicken is cooked through (internal temperature reaches 165°F).
07 - Remove lid and continue simmering uncovered for 2–3 minutes to allow the sauce to reduce and thicken slightly.
08 - Transfer chicken to serving plates. Spoon the pan sauce and vegetables over the top and garnish with additional fresh basil leaves.