Doing shapes like this procedurally is something that seems like it should be simple, but is actually pretty complicated.
I also built an expression-based solution, this one based on actually creating the geometry for the chevrons, point by point, almost like the LOGO language and turtle graphics.
I’ve attached the project file including the shape and a set of rigged, animatable shapes. I’d always rather help people learn than just do the work for them, so please ask questions!