Question for the Houstonians

Hello!

We are a Dutch couple with family here in Houston. We have been here many times, love the bbq and the Tex Mex but we have heard that this place has the most different cultures in the world. So we want to experience some different food. Any tips for Nigerian, Vietnamese, Lebanese, [insert country] here in Harris County? We have a couple of days.

Your tips are much appreciated.

Margot