Lincoln isn't a bad actor and he doesn't do an awful job as Rick...his problem is that he sucks at that hillbilly accent.
I honestly don't think any of the cast are bad actors you have the people who are really good like Morrissey, Reedus, Melissa McBride and Scott Wilson (RIP Herschel!) and then you have the people who are OK like Lincoln, Lauren Cohen, Danai Guira, CHad Coleman and Lawrence Gilliard.
The rest like Steven Yueng and the chicks who play Beth and Sasha aren't really asked to do much.
Chandler Riggs is a special case because he is a little kid and most little kids suck at dramatic acting but he is not the worst child actor ever. He is not as bad as Will Smith's kid in After Earth but not anywhere near as good as Christian Bale in Empire of the Sun. Riggs is in the Sean Astin in the Goonies range as a child actor.
I honestly don't think any of the cast are bad actors you have the people who are really good like Morrissey, Reedus, Melissa McBride and Scott Wilson (RIP Herschel!) and then you have the people who are OK like Lincoln, Lauren Cohen, Danai Guira, CHad Coleman and Lawrence Gilliard.
The rest like Steven Yueng and the chicks who play Beth and Sasha aren't really asked to do much.
Chandler Riggs is a special case because he is a little kid and most little kids suck at dramatic acting but he is not the worst child actor ever. He is not as bad as Will Smith's kid in After Earth but not anywhere near as good as Christian Bale in Empire of the Sun. Riggs is in the Sean Astin in the Goonies range as a child actor.