So, I did a lot of work on putting together my Lizardfolk character, and part of it was preparing for such a discussion, because the character... isn't too terribly picky about where his meat comes from. He wouldn't go hunting sentients unless he was under starving conditions, largely because sentient are just smarter, and so harder and more dangerous to catch. Higher risk, and uses up more calories. And nobody lies to see their cousin become gumbo, and they'd raise a fuss. A deer is about the same mass, and is so much easier...
But, the party killed an ogre, and he was like... "You guys are just gonna leave it there? There's a lotta good meat on that thing."