Palmer (foot) wasn't spotted at practice Wednesday, Daniel Popper of The Athletic reports.
Palmer was listed as a non-participant Tuesday as well, so what the wideout is able to do Thursday will be critical in determining his chances of playing in Saturday's playoff opener against the Texans. If Palmer -- who was inactive for the Chargers' Week 18 win over the Raiders -- remains out this weekend, DJ Chark and Derius Davis would be in line to see added snaps alongside fellow wideouts Ladd McConkey and Quentin Johnston (thigh/illness).