To answer the question in the headline: Yes, we should be concerned. Any time a pass rusher is missing practice, it’s not a good thing.
Dee Ford, the KC Chiefs pass rusher, left Sunday’s game against the Chargers with what the Chiefs called a hip injury. Four days later, he didn’t practice on Thursday with what the Chiefs called a back injury.
The Chiefs would be down to Frank Zombo if Ford is out. With Tamba Hali already out, Zombo is basically the Chiefs fourth option at outside linebacker.