Preheat oven to 450F or 425 convection. Line a baking sheet with parchment paper.
Add potatoes, olive oil, ½ teaspoon salt, and ½ teaspoon pepper to the baking sheet and toss to coat. Spread evenly on the baking sheet, placing them cut-side-down.
Add the chicken pieces and sprinkle all over with remaining 1 teaspoon salt and ½ teaspoon pepper. Use your hands to rub the oil and salt all over the chicken. Arrange on top of the potatoes.
Bake for 40-50 minutes, or until chicken is cooked through and potatoes are dark golden brown and crispy.
To make the sauce, add all ingredients to a high-speed blender and blend until smooth (it's ok if it’s a bit chunky).
Serve the chicken + potatoes with sauce on the side for dipping and a simple green salad or this week's Spring Caprese.