Start by tossing your halved cherry tomatoes and garlic cloves in olive oil, spreading them out on a baking sheet. Roast at 400 degrees F (200 degrees C) for 25-30 minutes, until soft and fragrant—just watch closely to ensure they caramelize without burning.
Place your pine nuts in a dry skillet over medium heat. Stir them occasionally for about 2-3 minutes, until they turn golden and become aromatic. This adds a lovely nuttiness to your salad, but watch closely to prevent burning.
Boil your cavatappi pasta in a large pot of salted water for about 8-10 minutes or until al dente. Taste to ensure it has a slight bite. Rinse it under cold water immediately to stop the cooking process.
In a large bowl, combine the roasted tomatoes and garlic with the cooked pasta. Add balsamic vinegar, kosher salt, and black pepper, and mix well. The vibrant colors will blend beautifully, so taste and adjust the seasoning as needed.
Stir in your pesto until the pasta and vegetables are well-coated; it should feel lush. Then add the fresh mozzarella, torn basil, and chives. Toss gently—letting the fragrance of fresh herbs fill your kitchen.
Let your salad chill in the refrigerator for about 30 minutes. This allows the flavors to mingle. Before serving, taste check and adjust seasoning with salt, pepper, or a splash of vinegar if needed.