In a large skillet, heat the olive oil over medium-high heat. Add the chicken thighs and cook for about 5-7 minutes on each side until browned and cooked through. Remove the chicken from the skillet and set aside.
In the same skillet, add the sliced onion and mushrooms. Sauté for about 5 minutes until the onions are translucent and the mushrooms are tender.
Stir in the minced garlic, paprika, thyme, salt, and pepper. Cook for an additional minute until fragrant.
Pour in the chicken broth and bring to a simmer. Return the chicken to the skillet, cover, and let it simmer for about 10 minutes to meld the flavors.
Remove the skillet from heat and stir in the sour cream until well combined. If the sauce is too thick, add a little more chicken broth to reach your desired consistency.
Serve the chicken paprikash over cooked egg noodles or rice, and garnish with chopped fresh parsley.