Characteristic impedance of RF PCB when narrowing the trace width to fit pad
2.4 GHz has a wavelength in free space of 125 mm and on a PCB it usually reduces to about 2/3 so say 83 mm. Trace lengths shorter than one tenth of a wavelength are usually regarded as not needing to be matched so if the trace length you refer to is less than about 8 mm then don't worry about it.