Creamy Chicken with Fluffy Potatoes and Savory Gravy Bowls

Ingredients

• 1 tablespoon olive oil
• 2 tablespoons minced garlic
• 12 ounces skinless boneless chicken thighs
• 1/2 teaspoon ground black pepper
• 1 teaspoon salt
• 1 package McCormick 30 percent less sodium brown gravy mix
• 1/4 cup whole milk
• 2 pounds Yukon gold potatoes, cut into 1-inch pieces
• 1/4 cup light sour cream