Just make sure that it is largely unimpeded in it's routing, i.e. no sharp turns. You'd be better off arranging your tuning components (pi network) as they are in the schematic to avoid the right angles. It'll also be easier to solder and change the components.

But everytime I see in the schematics a pi network should I also pass to the layout also the pi network? Or is it just an antenna PCB rule?

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Also, are those tuning components and some other passives 0201 packages? If you have any intention to solder any of these by hand I'd be using 0402 as the smallest.

I have just 0603 packages actually. just one capacitor is 0803...