In a large pot, heat the olive oil over medium heat.
Add the diced chicken thighs and season with salt and pepper. Cook until browned, about 5-7 minutes.
Remove the chicken from the pot and set aside. In the same pot, add the onion, garlic, carrots, and celery. Sauté until the vegetables are tender, about 5 minutes.
Return the chicken to the pot and pour in the chicken broth. Add thyme and oregano, and bring to a boil.
Reduce the heat and let it simmer for 20 minutes, allowing the flavors to meld.
Stir in the heavy cream and grated Parmesan cheese until well combined. Simmer for an additional 5 minutes until the stew thickens.
Adjust seasoning with salt and pepper as needed.
Serve hot, garnished with fresh parsley.
Notes
For a thicker stew, let it simmer longer. You can also add other vegetables like potatoes or peas.