Blackened Chicken With Smashed Potatoes Recipe

Name: Blackened Chicken With Smashed Potatoes Recipe
Ingredients: For the Chicken:; 4 boneless skinless chicken breasts, about 6 ounces each; 4 cups water; Kosher salt; For the Rub:; 2 tablespoons paprika; 1 tablespoon dried oregano; 2 teaspoons ground thyme; 2 teaspoons onion powder; 1 teaspoon garlic powder; 1 teaspoon cayenne powder; 1 teaspoon fresh ground black pepper; White pepper; For the Potatoes:; 2 pounds yukon gold potatoes, unpeeled, washed, cut into 2-inch pieces; 8 tablespoons (4 ounces) unsalted butter, cut into 1/2-inch pieces; 1 to 1 1/2 cups whole milk, warmed; 4 teaspoons vegetable oil