1. Heat olive oil in a large skillet over medium-high heat. Season chicken breasts with salt and pepper, then add to the skillet. Cook until golden brown on both sides, about 5-7 minutes per side. Remove chicken and set aside.
2. In the same skillet, add garlic and cook until fragrant, about 1 minute. Add sun-dried tomatoes, oregano, and basil. Stir to combine.
3. Pour in chicken broth and heavy cream. Bring to a simmer, then reduce heat to low. Add baby spinach and cook until wilted, about 2 minutes.
4. Return chicken breasts to the skillet and simmer until chicken is cooked through, about 5-7 minutes. Serve hot.