“3rd party charger” . . . like the USB port on a computer, for example?
Nope, those are pretty limited to putting out what is specified. . . but a 110 to 5V 1amp DC charger is by no means guaranteed to put out 5V at 1amp. The computer has a switching power supply. . . and will always have 5V at 1amp DC on the logic board. . . or it will burn out itself. Often 3rd party chargers are junk transformers that just have a DC output at 5V, and not much control of the amperage or voltage. ZAAAP!
No, like a 1” cube 110V AC to 5V DC converter. Per an article somewhere that does a detailed analysis, Apple’s is a marvel of compact & safety engineering, while the cheap knockoffs are high voltage disasters waiting to happen - and in this case did.