I am travel 4 days a week, almost all restaurants are keto friendly if you order right. The best one probably is Ruby Tuesday, they have spaghetti squash, which you can sub for wheat pasta. I eat at Wendy's, chipotle, seafood restaurants like Red Lobster, and Starbucks heavy cream latte gets me the fats if I am falling behind on the fats. Five Guys is easier to order because they have naked burger if you are shy ordering a burger with out bun.

It's tough here when I'm off base, which is most of the time (I live off base and work mostly off base). Even the American restaurants have a Japanese spin on things, so I can't trust the nutrition info generally.

That said, if I were not to track I could do any Yakiniku place, and I am so deeply tempted but I would have no idea how to log it. I could also do a steakhouse, and Kobe beef is a pretty good draw but it's expensive, especially down here in Okinawa. I could probably ask the chef at a Teppanyaki restaurant to hold the rice and just give me extra veggies, but who knows what's in the sauces.

It will be worse when/if I move. I'm looking at either Taiwan or mainland SE Asia (Cambodia, Laos, Vietnam, possibly Thailand) and it may just become basically impossible to maintain keto. We'll see.

Cracker Barrel is my favorite. I can get all sorts of great proteins and pair them with green beans, greens, and a side salad for a low carb dinner. I give my biscuits and/or corn muffins to my dining partners, which makes them happy.

Jason's Deli is another favorite of mine - I get the salad bar to go and eat on it for two or three days.

Also, just about any steak place is a good option for me. It's pretty easy - just order too much cow, and then pick at the mixed veggies on the side, because, obviously, you want to eat the cow above the veggies!

Some of these are repeats but its my go to list that's ever expanding:

Chipotle - no rice, beans, corn, tortilla
In-n-out - Protein style burger w/o onion or tomato
KFC - either the grilled chicken or the original recipe. I usually have some of both. I also want to try the double down :P
Chick fil A - Fantastic salads! Even the cobb salad can work if you've had a fairly low carb day
5 guys - bunless burger
Smash Burger - bunless burger, veggie fries are ok
fast food burger joints - just remove the bun
Taco cabana - Fajitas, salad bowl, lots of guac

Other/general:
BBQ places - stick to the stuff w/o or with minimal sauce. Brisket is a great staple.
Steak houses - steak and veg is a easy go to!
Mongolian Grills - stick to the meats and veggies. Cook in oils with soy sauce, garlic and chili paste
Mexican restaurants - go for the fajita! No tortilla
Diner - go for breakfast! sausage, bacon and eggs galore with a coffee (i usually bring my own stevia packets)
Anyplace with a extensive salad bar (I can even do some buffets if i stick to the plain meats and salad bar)

Also, consider picking up a rotisserie chicken at whole foods or your local market for something quick and cheaper for a family.