Home is manageable because you have your handful of trusted spots. A new city takes all of that away at once, which is why travel is where a lot of us just give up and eat granola bars in the hotel room. You do not have to. A little planning turns an unfamiliar city into a short list of good options.
Do the research before you land
The best time to figure out where to eat is not when you are hungry and standing on a corner. Before the trip, build a short list of a few places near where you will be. Look for the signals that a kitchen takes allergies seriously: an allergen menu on their site, reviews that mention accommodating diners, a dedicated gluten-free or nut-free setup.
Anchor around a couple of safe bets
You do not need twenty options. You need two or three you trust, ideally near your hotel or the places you will actually be. Once you have a couple of anchors, the pressure is off, and you can be more relaxed about the rest of the trip.
Call ahead for the important meals
For a dinner that matters, a quick call earlier in the day is worth it. Ask the same questions you would ask anywhere: allergen info, shared fryers and surfaces, whether they can prep your meal with reduced cross-contact. A kitchen that handles the call well is usually one that handles the meal well.
Let the tool do the shortlisting
Scanning a new city's restaurants by hand is slow. Check spots on AllergyTable as you plan and it will flag the risky dishes and give you the questions to ask, so your short list is actually vetted, not just guessed.
A new city is not a reason to eat badly or to stress the whole trip. It is a reason to do twenty minutes of planning up front, so that once you are there, you can just enjoy the food like everyone else.