Yes, pizza can help runners recover post-workout. The white bread found in pizza crust is a readily available source of carbohydrate for muscle glycogen synthesis after a run [1
]. Moreover, cheese is rich in leucine which has been shown to stimulate muscle protein synthesis.
However, pizza is high in calories, sodium, and saturated fat, so this food should be consumed in moderation to avoid negative health and performance outcomes.
 Burke, L. M., Kiens, B., & Ivy, J. L. (2004). Carbohydrates and fat for training and recovery. Journal of sports sciences, 22(1), 15–30. https://doi.org/10.1080/0264041031000140527