Am I meant to eat a gram of protein per lb of bodyweight PER DAY?! That's a fucking lot of chicken.
0.6-0.8 g/lb (assuming you're not severely obese, the fatter you are, the lower the ratio) should be enough to maximize muscle protein synthesis. People often round up to 1g/lb because A) Its simpler than actually doing math and B) There's not really a major downside, it hedges against overestimating protein intake, better safe than sorry.
Yeah, it would be a lot of chicken breast. Thankfully, God was gracious enough that he saw it fit to give us other protein sources. There are other parts of the chicken. There are other meats. Eggs. And while I wouldn't suggest entirely relying on them, there many vegetable sources of protein, tofu, beans, lentils, etc. Beyond that, the majority of things you eat will contain SOME amount of protein that will help contribute to your daily total. Even shit like white rice has a little protein.
If you're still having trouble, you can always use shakes. Like vegetable protein sources, I wouldn't suggest relying entirely/primarily on them. In theory, whey is higher quality protein than anything you can get in normal food. In practice, there have historically been a lot of issues with manufacturers misrepresenting protein content, so you may be getting less than you think. And whey also digests super quickly. This is good, because it means you have room to eat more, but its "bad", in that if you got 100℅ of your protein from whey, you'd need a shake every 2-3 hours to actually take advantage of all that protein, which isn't the case with normal food
If you're dieting, especially with a steep deficit, and especially if you're already fairly lean, then there are arguments to be made for raising protein higher. It's generally more filling than other macros, helps to preserve muscle mass, is metabolized somewhat less efficiently, etc, etc... Outside of that, if you're only hitting 0.6g/lb, you'd likely only get marginal benefits going up to 0.8. If you're at 0.8, you probably won't get any noticeable benefit going to 1, but maybe it does something, and it certainly seems not to hurt
