I seem to be coming across a lot of guides to eating out.
Here is one site that has limited listing. The restaurants list the NI of only a few menu items.
Dotties (a great site) has points, but many are estimates:
This one has a lot of fast food information:
This one lists a lot of information, but not fiber:
The restaurant website should be the most reliable source. That too isn’t always accurate as I discovered during my recent trip to Sharis.