Preheat your oven to 375°F (190°C).
Pat the chicken thighs dry with paper towels and season them generously with salt.
Heat 1 tablespoon of olive oil in an oven-safe skillet over medium-high heat. Add the chicken thighs, skin side down, and sear for 5-7 minutes until the skin is crispy and browned. Flip the chicken over.
In a small bowl, mix together the balsamic vinegar, AIP-compliant sweetener, dried thyme, dried rosemary, garlic powder, and onion powder.
Pour the balsamic glaze mixture over the chicken thighs in the skillet. Drizzle the remaining tablespoon of olive oil over the top.
Transfer the skillet to the preheated oven and roast for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and is tender. Baste occasionally with the glaze in the pan to keep the chicken juicy.
Remove from the oven and let rest for 5 minutes. Garnish with fresh thyme and rosemary, if desired.
Serve the chicken thighs with the pan juices spooned over the top.