Pumpkin Rice Skillet with Chicken & Kale

1 tablespoon olive oil, divided

1 lb. boneless, skinless chicken breast cut into bite-sized pieces

½ cup chopped onion

¼ teaspoon salt

1 teaspoon minced garlic

3 cups chopped kale

1 pouch UNCLE BEN'S® READY RICE® Roasted Chicken Flavored

½ cup canned pumpkin

1½ cups low sodium chicken broth

¼–½ teaspoons dried sage

⅛ teaspoon ground black pepper

Grated Parmesan cheese, optional