During STS-37, astronaut Jay Apt’s suit was punctured while space walking. The hole size was 1/8 of an inch, but Apt’s skin sealed it. In fact, he didn’t even realize this had happened until after he got back in the ship and saw the red mark on his hand. Even then, he didn’t think anything of it, but ground control knew he had punctured his suit.
This would only be if you made one sandwich using the resources you have gained to make it, then doing nothing else with those resources. This isn't calculating the fact that the vegetables you grow will continue to grow and give more, and so on.