Injera isn't gf - unless you make it yourself.
Think about what you eat on a regular basis, that's how I pack food for burns. This time will be an exception, as I will be on the road for days...so I'm also working on what to take.
And, I am not at all familiar with Trader Joe's (as far as what they have, what is good, etc.), so that'll take a bit more time when we stop there right before BRC.
A friend of mine is also gf (and a BM employee, so she's been out there a time or two...) and her advice to me was:
"My staples out there usually fall into the Thai Kitchen rice noodle
ramen soup packs, Annie's wheat free mac n cheese, Trader Joe's makes an
awesome gluten free rice tortilla (burrito sized!).
Salty is going to be your best friend. Nuts, chips, granola bars or any
other bar that you like to nibble on for a snack.
I usually tend to eat breakfast because it isn't so hot yet - cereal or
fruit and a bar or if I'm fancy - wheat free pancakes or somethin like that.
Lunch - I do a lot of vegetables and salad type stuff. It can be hot in
the middle of the day and I often don't want to eat too much.
Dinner - one of those other things or tasty bites and boil in a bag rice.
oranges hold up well, as do apples - bananas, melons, peaches, berries
and other stuff not so much."
Tasty Bites makes Indian food you don't have to pre-heat, I always freeze some hummus and take some carrots, black bean soup/salsa...and lots of Redbridge.