01 - Pat chicken breasts dry with paper towels. Season both sides generously with salt and black pepper, pressing the seasoning into the meat.
02 - Heat olive oil in a large skillet over medium-high heat until shimmering. Add chicken breasts and sear for 3 to 4 minutes per side until golden brown. Remove chicken from pan and set aside on a plate.
03 - In the same pan, add red onion and sauté for 2 minutes until slightly softened. Add garlic and cook for 30 seconds until fragrant, stirring constantly to prevent burning.
04 - Stir in cherry tomatoes and cook for 3 to 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 well combined. Pour mixture into the pan, scraping up any browned bits from the bottom with a wooden spoon.
06 - Return 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 to 15 minutes until chicken is cooked through (internal temperature reaches 165°F).
07 - Remove lid and simmer uncovered for 2 to 3 minutes to allow sauce to reduce and thicken slightly.
08 - Transfer chicken to serving plates. Spoon pan sauce and vegetables over the top. Garnish with additional fresh basil leaves if desired.