See if pumping the clutch pedal a couple of times before shifting into gear changes anything. Could be a little air trapped in the system, if so give bleeding your clutch hydraulics a try. It could be your clutch is not fully disengaging and the pressure plate is rubbing. Or you have a pressure plate that's going bad or a bad master/slave cylinder.
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.