As a person born and raised in Thousand Oaks I believe I have enough authority to speak as to some good food options for teams looking for a bite.
El Mercado Guadalajara is within walking distance of the Amgen plaza and serves some pretty tasty tacos. It’s a grocery store with a little butcher section in the back where you’ll have to ask over the counter for food.
3 Amigos is right by the high school and is more appropriate for catering. Excellent burritos, chips and salsa selection is varied.
In-N-Out. Enough said
The plaza by Target has a whole host of good food options, including Islands, Mod Pizza, Habit Burger, BBQ, and Greek/Mediterranean food.