SImple pasta with chicken and spinach

Chopped 5 roma tomatoes and simmered with chicken breast, olive oil, chopped onion, minced garlic, and about 1 Tb dried Italian seasoning. Added 3 Tb butter, 1 cup pasta water, fresh spinach, and a bit more minced garlic before stirring into cooked pasta and throwing a bit of fresh mozzarella on top.