Heat the large saucepan or deep skillet over medium-high and add 2 tablespoons olive oil.
Season 1 pound chicken breasts (thin or halved portions) with 1/4 teaspoon salt, 1/8 teaspoon pepper, and 1/4 teaspoon dried basil on one side.
Add the chicken to the hot pan and cook about 5 minutes, then flip and sprinkle the other side with the remaining seasonings; continue cooking until the internal temperature reaches 165°F and no pink remains. Remove chicken to a plate and set aside.
Reduce heat to medium, add 2 cloves minced garlic to the pan and cook about 30 seconds until fragrant.
Pour in 2 cups chicken broth. In a separate bowl whisk 1 cup evaporated milk with 2 tablespoons cornstarch until smooth, then add that mixture to the pan and stir to combine.
Season the liquid with 1 teaspoon salt and 1/4 teaspoon ground black pepper and stir.
Add 3 cups dried elbow macaroni, bring the mixture to a simmer, and cook, stirring occasionally, about 10 minutes until the pasta is tender and most liquid is absorbed.
Stir in 2 cups grated Parmesan and 1 cup grated mozzarella until melted and the sauce is creamy.
Fold in 1/2 cup halved cherry tomatoes and 1/4 cup fresh basil.
Slice the cooked chicken and return it to the pan, stirring gently to combine. Drizzle with balsamic glaze if desired and serve warm.