In a heavy 2-3 quart saucepan, heat the oil to 375 degrees.
While the oil is heating, slice the zucchini into very thin rounds.
Place the zucchini into the hot oil in batches, being careful not to overlap too much.
Fry the zucchini, turning occasionally, until golden brown. This takes about five minutes, but you'll need to keep your eye on it the entire time.
Remove the zucchini and place on a plate lined with paper towels to drain. Sprinkle with salt and parmesan cheese. Repeat until all the zucchini is fried.
Unfortunately, it's difficult to provide macros for this, as each batch might soak up a different amount of oil, and a lot of it will end up on the paper towels. If you need to know, measure the amount of oil that's left after you finish and subtract that from what you had when you started. That'll give you at least a rough estimate.
Keyword keto, low carb, side dish, snack, vegetables, zucchini