In a small saucepan, bring the chicken bone broth to a gentle simmer, then keep it warm over low heat.
Heat the olive oil in a wide skillet over medium heat. Add the diced chicken breast and sear until golden and cooked through, then remove and set aside.
In the same skillet, add the sliced mushrooms and shallots, sautéing until the mushrooms are browned and the moisture has evaporated.
Stir in the minced garlic and arborio rice, toasting the rice for 1-2 minutes until the edges are translucent.
Add the warm bone broth one ladle at a time, stirring constantly and waiting for the liquid to be absorbed before adding more.
Once the rice is tender and creamy, stir in the cooked chicken, parmesan cheese, sea salt, black pepper, and fresh thyme.
Serve immediately while the risotto is warm and velvety.