My DD2 has colouring issues. Bounces off the walls. MSG is one we have to avoid too.
One tip...LCM's bars are bad news! I bought one packet as a one off & learnt my lesson!

DD's snacks don't vary greatly, coz she's very fussy, but she eats the home brand le snacks, watermelon & apples mainly. They all seem to sit ok with her.