It's so easy to spot, right? I love a good food blog... but I really don't like a bad food blog! I don't think you need to be worried about how many other people are doing it as long as you work hard on your own blog's promotion. This will likely mean diversifying your mediums to include social media and video content. Get your name out there on multiple platforms and you should see success faster than you would if you simply wrote for a single site.