FIL in town today, wanted us to meet him for lunch with DC. We invited him to our house instead, but no, specifically wants us to meet him out for lunch.
Now, despite having toddler twins which makes eating out hell, I really hate eating in front of FIL. He constantly nitpicks at what people are eating/how much they're eating, to the point where it makes me feel really self conscious. I'm veggie, so on top of the usual crap he gives everyone else, he just can't get his head around it and asks (every fricking time) 'why are you a veggie then?' 'What can you even eat?' 'Do you find it hard being a veggie?' 'How can you eat eggs if you're a vegetarian?' - this is always in front of the entire family, so usually around 8 other people. The focus becomes what's on my plate while I'm trying to enjoy my food.
He has given my DP a complex about food which became very apparent as soon as I started seeing him, always analyzing what was on his plate and talking about whether it was healthy or not, and he is so so rude to his DP (who is tall and slim) as she likes food. He's always commenting on how much she eats or has eaten that day. I wouldn't be able to stand it if I was her - just let the woman eat!!
Anyway, I got in bit of a huff about it with DP as I really didn't want to go and have lunch in front of him, the last time we saw him he came round to our flat while I was making my kids a lovely (veggie) shepards pie, and he didn't shut up about it, to the point where he said I was a mean parent for giving my kids vegetarian food! Because clearly they're wasting away to nothing 
Anyway, now I'm sat on my own at home while DP has taken DC to see him. AIBU to not eat out with him (even though I'm now sat at home alone with no food in)?