We have consistently had good food and service for 5 years. Last week after lunch I had a bout of Montezuma's revenge. This week I ordered the same exact meal and beverage. Went home and the same problem occurred. 1 hour later my husband was hit with same problem. The only food item we both ordered was egg.
So going forward eggs are out for us when we visit First Watch.
I did call the restaurant and was told perhaps I was allergic to wheat, since I had toast.