01 - Season both sides of the chicken breasts generously with salt, freshly ground black pepper, dried oregano, and dried basil.
02 - Heat olive oil in a large skillet over medium-high heat. Add the seasoned chicken breasts and cook for 5 to 6 minutes per side until golden brown and cooked through. Remove from the skillet and set aside.
03 - In the same skillet, add the finely chopped onion and sauté for 3 minutes until softened. Add the minced garlic and cook for an additional minute until fragrant.
04 - Add the halved cherry tomatoes to the skillet and sauté for 3 to 4 minutes until they begin to soften and release their natural juices. Pour in the chicken broth and bring the mixture to a gentle simmer.
05 - Stir in the chopped spinach and cook for approximately 2 minutes until just wilted.
06 - Return the seared chicken breasts to the skillet, nestling them into the tomato and spinach mixture. Simmer for another 2 to 3 minutes until the chicken is heated through.
07 - Sprinkle with grated Parmesan cheese before serving, if desired. Serve immediately over rice, pasta, or cauliflower rice for a complete meal.