I am trying to wire multiple lights (under-cabinet lights in the kitchen) from a switch. The lights are in three different directions from the switch so I am not sure if parallel wiring would work. Would it be up-to-code to twist-cap all of the wires in the switch box? What other options do I have?

Use a 1900 box for the switch box. This will give u enough room for the wires u need.

Power black to switch.

Wire nut blacks from lights with a pigtail. Pigtail to other screw on switch.

Wire nut all whites together.

Good luck

Chuck