Season the chicken breast with half of the sea salt and black pepper.
Heat a large non-stick skillet over medium-high heat with 0.5 tsp of olive oil and sear the chicken until the internal temperature reaches 165°F, then remove from the pan to rest and slice.
In a small saucepan, bring the chicken broth to a gentle simmer over low heat.
Using the same skillet from the chicken, add the remaining 0.5 tsp of olive oil and sauté the minced shallots and sliced mushrooms until the mushrooms are browned and tender.
Stir in the minced garlic and Arborio rice, toasting the grains for about 1 minute until the edges are slightly translucent.
Add the warm chicken broth one ladle at a time, stirring constantly and allowing each addition to be fully absorbed before adding the next.
Continue the stirring and adding process for 18 to 20 minutes until the rice is creamy and tender but still has a slight bite.
Fold in the sliced chicken, grated Parmesan cheese, fresh thyme, and the remaining salt and pepper.
Serve immediately while the texture is rich and silky.