Season the chicken breast with half of the sea salt and black pepper, then pan-sear in a skillet over medium heat until cooked through.
Remove the chicken from the skillet and let it rest for 5 minutes before dicing it into small, bite-sized pieces.
In the same skillet, add the extra virgin olive oil and sauté the mixed mushrooms until they release their moisture and turn golden brown.
Stir in the minced shallot and minced garlic, cooking for about 1 minute until they become fragrant.
Add the arborio rice to the skillet, toasting the grains for 2 minutes while stirring until the edges appear translucent.
Begin adding the chicken bone broth 0.25 cup at a time, stirring constantly and allowing the liquid to be fully absorbed before adding the next portion.
Once the rice is tender and the consistency is creamy, stir in the diced chicken, grated parmesan cheese, remaining sea salt, black pepper, and fresh thyme leaves.
Serve the risotto immediately while it is warm and velvety.