Creamy Chicken Pesto Pasta

Name: Creamy Chicken Pesto Pasta
Cook time: 20 min
Total time: 20 min
Cuisine: Italian
Ingredients: 8 ounces dry pasta, spaghetti, linguine, or fettuccine; 2 boneless and skinless chicken breasts (about 1 pound); 1/2 teaspoon salt; 1/4 teaspoon ground black pepper; 1 tablespoon pesto sauce, homemade or store-bought; 2 tablespoons vegetable oil; 2 tablespoons butter; 1 small red onion, sliced; 2 cloves garlic, minced; 1 cup cherry tomatoes, halved; 1/2 cup heavy cream; 1/2 cup chicken broth; 2 tablespoons pesto sauce, homemade or store-bought; salt and pepper (to taste); 1 tablespoon pine nuts (for garnish)