Are you adding pizza or are you eliminating something else and substituting pizza? All else being equal, the number of calories can be more significant than the composition of the calories, so long as you're getting enough protein and not going to extremes.
What is current bf%? It's easier to cut if % is high, so details might be less important.
The best advice is probably to try it for a while. If you were improving and the improvement stops, the change was a bad idea.