While the plugs are out do a compression test.
Compare your plugs to the chart they are actually not drastically bad. 1/4 look fine 2 needs a look and three should match a picture with a good description.
How old are the wires/ cap/ rotor???
Are your trips long short???
What kind of fuel you run??
Are the compression readings within limits meaning optimum is 150 psi and all should be within 10 psi of each other.
Personally I wouldn't get too worried unless the compression is off. Drive it like you stole it.
Sent from underneath my Jeep
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.
[COLOR="Blue"][B]AF Jeep Club Tail #184[/B][/COLOR]