Cut 8 boneless, skinless chicken thighs into 2-inch chunks.
Heat a skillet over medium-high heat. Add 2 tablespoon oil and 1 tablespoon butter to the pan. Melt and stir together.
Add 1 cup chopped yellow onion and 4 minced garlic cloves to the pan, and cook for 1 minute until fragrant.
Add the chopped chicken to the skillet and brown on all sides.
Sprinkle in 1 teaspoon Italian seasoning, ½ teaspoon salt, and ¼ teaspoon ground black pepper. Mix with chicken.
Stir in ½ cup chicken broth and bring to a boil. Reduce heat to simmer and cook for about 10 minutes.
Add 1 lb green beans to the pan. Continue simmering until chicken is cooked and the beans are tender, about 10-15 minutes. There should still be some broth liquid left in the bottom of the pot.
Now stir in 1 pint grape tomatoes (halved) and 2 chopped green onions, and cook for 1 minute.
Season with more salt and pepper to taste, and sprinkle with ¼ cup freshly grated Parmesan cheese. Use a ladle to scoop the chicken and vegetables with broth into bowls to serve. Enjoy!