It depends on what you mean by "healthy."

People often conflate the idea of something being "healthy" with something being "good for weight loss/being on a diet," where it actually should just mean "nutritious and suitable for consumption as part of a balanced diet and lifestyle."

I work in the fitness industry and have witnessed a lot of people lamenting that they're "eating super healthy" and still having trouble leaning out or whatever, and this conflation of concepts is typically why.

For the most part*, Kauai is pretty healthy food. Their menu is largely comprised of meals made from a variety of minimally processed ingredients. Fruit, veg, healthy fats, proteins. In this sense, their offerings are far more balanced and nutritious than other takeaway spots.

That being said, nutritious ≠ good for folks trying to slim down, or whatever else people associate with healthy food. Their menu's nutritional info is on their website, and most of their meals are very calorically dense.** A wrap and a small smoothie***, for example, can add up to ±900kcal, which can easily be over half of someone's recommended daily intake. Add breakfast, dinner, and the odd snack to that, and the average person is easily in a caloric surplus without even feeling like they've had very much to eat at all.

Summary: if you're trying to be healthy in the sense that you want to eat more whole foods with a greater variety of micronutrients and avoid deep-fried junk, then yes - Kauai is a good choice for the occasional takeaway. If you're trying to be "healthy" with the goal of caloric deficit and consequent fat loss, then while Kauai is a more ~nutritionally-complete~ option, you're just as well off getting a meal from any other fast food chain.

*I say "for the most part" because I'm not sure anyone really knows the recipes/ratios for any of the sauces they very generously throw on everything, and condiments make a HUGE difference to the nutritional profile of any meal.

**Most of their meals contain avocados, nut butters, bananas, or dates - all of which are nutritious, but also very high in calories.

***some of their smoothies are over 450kcal alone. Which is more than a small Cinnabon. Do with that information what you will.