Halal Food In Los Angeles
While the OP is long gone, an interesting option is California Steak and Fries, with locations in the Fox Hills Mall in Culver City and the renovated historic Baldwin Theater building on La Brea and Coliseum. While not everything is Halal, a lot of their items are if you specify.
This is the wrong side of town for you, but there is a Halal place at the corner of Caleveras and Lake in Altadena. They advertise various types of burgers (lamb and beef) and fried chicken, it's next to a Muslim community center, Masjid Al-Taqwa, though I'm not sure what the name of the restaurant is.
Check with your personal imam, qadi or other clergy to see if your tradition allows for kosher food. Some muslim traditions do.
If not, vegetarian such as the above mentioned Paru's or real food daily would work, as would a dairy restaurant like "The Milky Way" on Pico. If you're on Hollywood,
contact Moun of Tunis on Sunset, (Pretty sure it is halal)
Marouch on santa monica blvd
Beverly HIlls Colbeh on wilshire
and see if they are halal.
Aswell there are many iranian places on westwood blvd south of Wilshire (near ucla) that may be halal.
flame, shaherzad etc.
If you have a car and want to go east for an adventure (or know someone with a car) happy family in monterey park has vegetarian only food (no alcohol) and China Islamic on Garvey in monterey park is strict hallal, no alcohol allowed in the restaurant. and it's excellent.
I don't know if it's too late, but I found this link:
I've only been to two places on the list. Beverly Falafel is a good quick lunch kind of place, the food's not amazing. I remember their falafel and hummus were good, but didn't care for their chicken so much. Gaby's in Culver City is quite good. But under "Halal Authenticity" it says "verbal assurance by staff." The waitressess seem, shall we say, well, kinda ditzy. I'd just make sure you were getting "verbal assurances" from someone with some authority, like Gaby himself. Beverly Falafel is much closer to Hollywood, but still isn't especially close. Good luck, enjoy your stay!