look (a little/bit) off
1. To look sickly, unwell, or out of sorts, either physically or mentally. You're looking a little off, Jim. Are you feeling all right? That dog on the corner looks a bit off. I think we should walk another way home.
2. To appear somewhat strange, incorrect, inaccurate, or substandard. A: "The rest of your portrait is coming along really well, but the hands look a bit off." B: "I know, hands are just so hard to draw!" The gameplay is great, but the graphics on the characters' faces are off.
3. Of food, to appear spoiled or rotten. These chicken breasts look a little bit off—I think we should throw them in the garbage.