Cook the Pasta: In a large pot, bring salted water to a boil. Add 1 pound of penne pasta and cook according to package instructions until al dente. Drain and set aside.
Prepare the Chicken: While the pasta is cooking, heat 1 tablespoon of olive oil in a large skillet over medium heat. Add the grilled, sliced chicken breasts to the skillet and cook for about 2-3 minutes, allowing them to warm through.
Sauté the Vegetables: Add the halved cherry tomatoes, finely chopped red onion, and minced garlic to the skillet. Sauté the mixture for about 4-5 minutes until the tomatoes start to soften and release their juices.
Combine Everything: Stir in the cooked penne pasta along with 1/4 cup of balsamic vinegar. Toss everything together, ensuring the pasta is well-coated and combined with the other ingredients.
Finish with Basil: Remove the skillet from heat and fold in the fresh chopped basil. Season with salt and pepper to taste.
Serve: Plate the Bruschetta Chicken Pasta, garnishing with extra basil leaves if desired, and enjoy!