We rarely eat at chain restaurants, but sometimes when you are on the road or are guests, you simply don't have a choice.
We used to be fairly satisfied with Taco Bell, but have rarely eaten there in the past 2 or 3 years. The food went from okay to awful. Some things I've thrown out after one bite, ugh!
Other than pizza from Papa Murphy's (we're addicted to the veggie gourmet and the veggie delite pizzas, both with white sauce), I can't think of any other chain restaurant that we ever eat at.
How about you? Have you had any luck finding eatable veggie food at chain restaurants?