Basil Pesto Chicken Spaghetti

Bahan-bahan (4 porsi)

• 14 ounces spaghetti (dry weight, or pasta of choice)
• 1/2 cup reserved pasta water
• 4 g rilled pesto chicken breasts (use this recipe)
• 17 ounces cherry tomatoes
• 1 cup homemade basil pesto (or store bought pesto)
• 1 pinch parmesan cheese (freshly grated, to serve)