01 - Preheat oven to 400°F. Grease a 9×13-inch baking dish with olive oil or nonstick cooking spray.
02 - Pat chicken breasts dry and season both sides generously with salt, pepper, paprika, and dried thyme.
03 - In a large skillet over medium heat, melt butter with olive oil. Add sliced mushrooms and sauté for 4-5 minutes until softened and lightly browned. Stir in minced garlic and cook for 1 minute until fragrant.
04 - Arrange seasoned chicken breasts in the prepared baking dish. Spread sautéed mushrooms evenly over the chicken. Pour chicken broth around the chicken, not directly over the top.
05 - Sprinkle shredded mozzarella and grated Parmesan cheese evenly over the chicken and mushrooms.
06 - Bake uncovered for 25-30 minutes until chicken reaches an internal temperature of 165°F and cheese is bubbly and golden brown.
07 - Let chicken rest for 5 minutes before serving to allow juices to redistribute. Garnish with fresh herbs if desired.