“No problemo” is not Spanish. In fact, it’s not English. It’s a white man’s attempt at speaking Spanish. I remember saying that as a kid because I didn’t know Spanish and I thought that was correct. But in fact, it’s very wrong.
The correct term is either “No hay problema” or “Ningún problema”. So for the fact that this fake “Mexican” restaurant is not properly using a Spanish term really shows how much they are catering to the white man and how unauthentic their stuff is.
P.F. Chang, Panda Express, Taco Bell, you guys I will also categorize into this group of fake foods.