i opened my door today and it flung open. it didnt hit hard but did hit the car next to me. i have a black srt-4 and it chiped on the inside/side of the door. about maybe 1/8-1/4 of an inch. what do you recommend i use to fill this in? paint pen? i wouldnt even need to clear coat it would i???

I would go with the paint and clearcoat pen. The basecoat by itself will not shine so you want to cover it with clearcoat. Then use rubbing compound to smooth and shine the area. Let me know how your project turns out.