Preheat oven to 375°F. Pat chicken thighs dry and generously sprinkle with chicken seasoning. Set aside.
Heat olive oil in a large covered skillet over medium-high heat. Sear chicken thighs 3-4 minutes per side until golden brown. Remove from heat.
Deglaze skillet with white wine, scraping up browned bits from the bottom.
Add butter and melt. Stir in mushrooms, season with half the salt, and sauté 3-4 minutes.
Add onions and garlic, sauté an additional 2-3 minutes.
Stir in rice, chicken broth, Worcestershire sauce, pepper, onion powder, and remaining salt. Mix well and raise heat to high until bubbles form. Remove from heat immediately.
Place seared chicken thighs on top of rice mixture, cover skillet.
Bake at 375°F for 35 minutes. Check liquid absorption; if needed, bake an additional 5-10 minutes. Verify chicken internal temperature reaches 165°F.
Optional: Broil on high 1-2 minutes for golden brown chicken skin.
Top with fresh thyme and parmesan cheese. Serve immediately.
Notes
This dish stores well for leftovers and is perfect for reheating in the oven or microwave. Adjust seasoning to taste.