ok... as a weight watcher I'll just give you some weight watcher mathematics.
accoarding to their current system of ProPoints a normal sized grown up woman should eat about 35 points per day, and you recieve an additional 49 points per week to spend on special occasions and special treats, and this is only to maintain current weight not to lose or gain weight.
most fruits and vegtables are considered free as long as eaten in moderation and to maintain a good blood sugar level, and as long as the person still uses his/her daily budget.
1 normal sized egg is 2 points
12 grams of crisps or potatoe chips is 4 points
165 grams of fries is 14 points
1 normal sized pizza is usually around 43 points, even the veggie ones falls on about 40 points
so when eating pizza the entire daily point budget disappears and 41 points remains of the weekly bonus budget, and a normal person should eat at least 3 noraml meals and 2-3 "snacks" so say that a person eats that pizza for lunch and a normal meal should be around 10-14 points, so the person eats a breakfast worth 12 points and a dinner worth 14, that removes another 26 ponts from the remaining weekly bonus, and for the sake of being nice let's say that the person only eats fruit for her snacks.
she now has 0 daily points and 15 weekly points and 6 days remaining before getting a new weekly bonus, and there is enough pints left that the person could eat 96 grams of potatoe chips, a normal bag in sweden veries between 200-300 grams.
so sure, you can eat pizza every once in a while, if you are careful for the remaining 6 days of the week.
if you ask me it isn't worth it, one pizza is not better than being able to allow one self many smaller pleasures the whole week instead
I did make pizza my self once and managed to get it down to 18 points, but that wasn't nearly as good as a normal pizza.
as for the points recommendations for a man, the weekly bonus is the same, and I think it was 39 or 40 daily points, not entierly sure, that's why I counted with female measures instead, in either case, those are children and should eat substantially less than either a grown up man or woman, so I wouldn't recommend either fries or pizza on a healthy lunch menu for children.
*disclaimer: this is a pretty huge simplification, in the end the ammount of saturated/unsaturated fatty acids, sugar and salt comes into the equation of what is healthy or not, and the budget given excludes exercise, but the numbers given are correct for both the foods and the ammount of points that "should" be eaten by a normal sized adult woman.