Sweet gesture from NFL star Quinnen Williams ... the NY Jets D-lineman donated $25,000 worth of food to medical personnel in N.J. -- and it was all handmade by a celeb chef!!
The former first-round pick hit up Brianna's Nutrition Kitchen this month to take care of staffers at Morristown Medical Center in Morristown, N.J. -- and the meals didn't disappoint.
TMZ Sports has learned Quinnen and the private chef hooked up the heroes with super healthy products ... including seasoned protein, veggies and potatoes.
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One of the coolest parts of the gift?