Not sure if you're being serious here, but the _extreme_ vast majority of food is shipped, not flown. It's something like 0.16% [1], and I'll bet that's low-volume, high-worth food. And your local meat _probably_ has a higher carbon footprint than meat imported from a better climate; lamb from New Zealand, plus shipping to the UK, has a lower carbon footprint than lamb from the UK eaten in the UK [2], because the New Zealand climate is better.
[1] https://ourworldindata.org/food-transport-by-mode
[2] https://www.ecoandbeyond.co/articles/british-new-zealand-lam...
People really underestimate how efficient shipping has gotten over the last 50 years or so.
The idea that importing lamb from NZ is better than locally grown is absolutely ridiculous I wouldn't even know where to start.
What pisses me off is people complaining about my local, free-range meat consumption while chomping on fruit and grain grown in more temperate countries and flown here.
EDIT: But I have to admit, as a meat eater, I support the research into bugs for food. Because animal protein is unrivalled compared to vegetable protein. Although squeamish, I'd rather eat cricket flour than trying to make a vegan diet work.