How do you fill in chipped paint?

To fill in chipped paint, first clean the area around the chip to remove any dust or debris. Next, use a putty knife to apply a suitable filler, such as spackling compound or wood filler, ensuring it's slightly overfilled to allow for sanding. Once the filler is dry, sand it smooth to match the surrounding surface, and then touch up the area with matching paint for a seamless finish.