No, I would not feed can
Veggies really should not be fed to sullys. Stick with fresh greens if you can't let them graze outside. Also, optunia cactus, aloe, dandelion, kale, mustard, endive, hibiscus, rose of Sharon, grasses, Mazuri tortoise diet. Check out thetortoisetable.org for other edible plants and things.
I'm sorry, but sullys can eat some veggies, but not all the time. Tomatoes, beans, carrots, I keep a garden year round with lots of veggies that my sully eats, she also will eat the leaves. Um..cucumber, squash, melon, peppers are good.
"Veggies" should make up only a small part of a sulcatas diet, if any at all. A small amount once in a while won't hurt anything, but the bulk of the diet should be high fiber, low nutrition stuff like grass, weeds and leaves.
One of the neat things about sulcatas is that they seem to thrive on a wide variety of diets. We can all lend our opinions about what we think is "best" but they will thrive on just about any reasonable diet. I tend to avoid grocery store stuff most of the time, but mine will occasionally get endive or leftover salad fixins. This time of year they get some pumpkin from time to time, but mostly they get grass and leaves. Cactus too. I also feed a little differently for my adults vs. babies. Adults get lots of bulk. Dry grass hay is always available and they always eat too. Then I give lots of fresh grass, weeds, mulberry leaves and cactus pads. Today I slammed down two pumpkins for them. My babies get fed a little more carefully. I adjust the size of the food to suit them sometimes. I'll feed some leaves whole, but I like to finely chop their daily grass, and I grate up any pumpkin or squash they get, which is maybe 6 times a year. I'm not too worried about the adults. If they eat some tomato, its a tiny fraction of their intake for the day. For a baby to eat a few mouthfuls of tomato would make up a substantial portion of the intake for the day.