Season the chicken breasts with salt, pepper, dried thyme, and dried oregano.
In a large skillet, heat 1 tablespoon of olive oil over medium-high heat. Add the seasoned chicken breasts and cook for about 6-7 minutes on each side or until they are golden brown and cooked through. Remove from the skillet and set aside.
In the same skillet, add the remaining olive oil. Add the chopped onion and garlic, sautéing until the onion becomes translucent (about 2-3 minutes). Then, add the sliced mushrooms and cook until they are browned and tender.
Pour in the chicken broth and bring it to a boil. Add the orzo pasta and reduce the heat to a simmer. Cook for about 8-10 minutes, stirring occasionally, until the orzo is al dente and has absorbed most of the liquid.
While the orzo is cooking, slice the cooked chicken into strips. Once the orzo is ready, stir in the balsamic vinegar, add the sliced chicken, and mix well to combine. Adjust seasoning with salt and pepper.
If desired, stir in grated Parmesan cheese for extra creaminess.
Divide the Chicken Marsala Orzo onto plates and garnish with fresh chopped parsley.
Notes
Optional to add grated Parmesan cheese for extra creaminess.