Preheat your oven to 375 F.
Season each chicken thigh with minced garlic, sea salt, and freshly ground black pepper.
4 garlic cloves, Sea salt and freshly ground black pepper, 2 lbs. chicken thighs
Arrange the sliced sweet potatoes at the bottom of a baking dish and cover them with the sliced shallots. Season to taste with sea salt and black pepper.
3 to 4 sweet potatoes, 4 shallots, Sea salt and freshly ground black pepper
Place the chicken thighs, skin side up, on top of the shallots.
In a bowl, combine all the ingredients for the herb vinaigrette.
3 tbsp. olive oil, 2 tbsp. red wine vinegar, 2 tsp. Dijon mustard, 2 tsp. Italian seasoning
Drizzle the vinaigrette all over the baking dish.
Place some fresh tarragon sprigs over the chicken.
Fresh tarragon sprigs
Bake in the oven for 45 to 50 minutes.