Step 1

Sprinkle chicken with 1/4 teaspoon each salt and pepper.

Step 2

Heat 1 tablespoon oil in a large skillet over medium heat. Add the chicken and cook, stirring occasionally, until browned and just cooked through, 5 to 7 minutes. Transfer to a plate.

Step 3

Add the remaining 1 tablespoon oil, broccoli and water to the pan. Cover and cook, stirring occasionally, until tender-crisp, 3 to 4 minutes. Transfer to the plate with the chicken.

Step 4

Whisk cream, vinegar, mayonnaise, cornstarch, onion powder, garlic powder and the remaining 1/4 teaspoon each salt and pepper in a measuring cup. Increase heat to medium-high and pour the cream mixture into the pan. Bring to a simmer and cook, stirring, until thickened, about 2 minutes. Return the chicken and broccoli to the pan and sprinkle with herbs; cook, stirring, until heated through, 1 to 2 minutes more. Garnish with pepper, if desired.