My recommendation, if you're staying at a hotel, is to ask if they have a BBQ for guest use. Most do, and then you can stop at the grocery store and buy some chicken/fish, some vegetables (also a roll of aluminum foil), and cook it on the bbq.

I travel quite a bit for work (at least, when there's no pandemic) and even though my per diem would cover restaurants, I have almost completely switched over to hotel BBQs and eat better for way less money.