Dice the chicken breast into bite-sized pieces and season with a pinch of sea salt and pepper.
Heat the olive oil in a medium saucepan over medium heat. Add the chicken and cook until golden brown and cooked through, then remove from the pan and set aside.
In the same pan, add the finely minced shallot, garlic, and sliced mushrooms. Sauté until the mushrooms have released their moisture and turned golden brown.
Add the dry arborio rice to the pan and toast for 1-2 minutes until the edges are translucent.
Warm the chicken bone broth in a separate small pot. Begin adding the broth to the rice one ladle at a time, stirring frequently.
Wait until each addition of broth is almost fully absorbed before adding the next, continuing until the rice is tender but still has a slight bite.
Stir the cooked chicken back into the rice along with the parmesan cheese, sea salt, black pepper, and fresh thyme.
Serve immediately while the texture is creamy and warm.