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 and sauté the cremini and shiitake mushrooms until they are golden brown and tender.
Remove the mushrooms from the skillet and set aside; in the same skillet, add the minced shallot and garlic, sautéing until fragrant.
Add the arborio rice to the skillet, stirring for 2 minutes to lightly toast the grains until the edges are translucent.
Begin adding the warm bone broth one ladle at a time, stirring frequently and allowing the liquid to be fully absorbed before adding more.
While the rice cooks, season the shrimp with sea salt and black pepper, then sear them in a separate non-stick pan for 2 minutes per side until pink.
Once the rice is creamy and al dente, fold in the cooked mushrooms, seared shrimp, grated parmesan, and fresh thyme.
Serve immediately while the risotto is warm and the texture is perfectly luscious.