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Are any of the plants exposed to direct sun through windows? These have the appearance of small water droplet burns where the foliage has been misted with water or fertiliser spray and direct sunlight has been magnified through them, resulting in brown burn spots.
That's like a next-level sherlock holmes type assessment from @Noelle. Clearly, the burns are very specific even the pattern suggests that it looks like it was from a spray. When plants get sick the symptoms on the leaves are sometimes very specific. It gives you very strong clues if it's being overwatered, there is a fungal infestation or the soil has very low nutrients. In this particular instance, all evidence points to water lensing.
It appears that the plant is in good health, keep an eye on it and the dots should disappear in a few weeks. If other symptoms appear please let us know right away.
If you need further assistance, please let us know.
Eric
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