01 -
Preheat oven to 190°C (375°F). Pat chicken breasts dry with paper towels to ensure browning.
02 -
Rub chicken breasts with 1 tablespoon olive oil, ¼ teaspoon salt, ¼ teaspoon black pepper, and half of the dried Italian herbs evenly on both sides.
03 -
Heat a large oven-safe skillet over medium heat and add remaining 1 tablespoon olive oil. Sear chicken breasts 3 to 4 minutes per side until lightly golden but not cooked through.
04 -
Remove chicken to a plate. In the same skillet, cook diced onion and sliced mushrooms over medium heat for 5 to 7 minutes until softened. Season with remaining salt and pepper, stirring frequently.
05 -
Stir in minced garlic and cook for 30 seconds until fragrant. Add chicken bouillon powder, remaining Italian herbs, and chicken broth, scraping browned bits from the skillet. Add spinach and toss gently until wilted.
06 -
Nestle seared chicken breasts among the vegetables in the skillet, spooning some mushrooms and spinach over the top. Transfer skillet to oven and bake for 20 to 25 minutes until an internal temperature of 74°C (165°F) is reached.
07 -
Remove skillet from oven and let chicken rest for 5 minutes to redistribute juices. Serve chicken topped with mushrooms, spinach, and pan juices alongside grain or bread.