Due to my social media activity, I've learned that there are two kinds of pictures that friends seem to disapprove of: Pictures of food and pictures of your kids (pictures of other people's kids are even more frowned upon).
And honestly, I can kind of see why: It's the classic social media clash. You post pictures and status updates of things you're enjoying or happy about because it makes you feel good.
But people that follow you and read your posts don't always share your interests, and almost certainly don't follow you to keep up with your food diary.
The way I see it though, posting "foodie" pics is such an Instagram cliche that I don't think anyone can complain anymore. The war has been lost. If it really bothers you that much, maybe you should unfriend them.
I know we're straying off Instagram here, but one of my friends recently posted a Vine of a meal, and I thought it looked pretty darn tasty!