Preheat oven to 350 degrees F.
Season the chicken thighs with Kosher salt and freshly ground black pepper. Heat the olive oil in a frying pan over medium high heat. Place half of the chicken thighs in the pan and sear both sides of the chicken until lightly browned. Transfer to a plate and repeat with the remaining thighs.
In a medium bowl, whisk the remaining ingredients until well combined. Pour into the same pan and cook the sauce over medium heat until reduced by a third.
Add the chicken back to the pan and bake in the oven for 20 minutes or until the chicken reaches an internal temperature of 165 degrees F.
Remove the chicken from the frying pan and transfer to a serving platter, reserving the glaze in the pan. Tent the chicken with aluminum foil to keep warm.
Cook the glaze over medium heat until reduced by another third. Drizzle over the chicken and garnish with cilantro and sliced oranges if desired.
