Aren't salted or heavily flavored beans used in Sichuan and Hunan food, often as a garnish? But yes, my wife is similar with beans: she's grown to like chickpeas and lentils, but always looks askance at savory bean dishes.
I tried Nala's today. Enjoyed it - not great, but a tasty burrito; not quite as good as the one time I've had Chipotle in North America. The meat quantity was fine for me, but anyone who cares much about it will want to get the double portion. I'd definitely have preferred less rice and more beans. They asked if I wanted it spicy, and I said yes, but I didn't register any heat at all.
I think Eddy's Cantina in Tianmu is significantly better, but that's out of the way for a lot of people.
Note that Nala's isn't so much a restaurant as a stall fronting on the sidewalk. There are two chairs at the bar/counter, but no interior space.