Okay, take egg in hand, throw by T on the ground, take next same egg, Throw by T on the ground -> aaand they stack(2)
Put both in the Incubator, wait. Your pizza is ready (u will get two soul stones, one is empty, one with Poke*on :D)

Nothing serious, but still a bug :D (Yeah, i was expected for two same monsters and hatching more than one egg is same time :D)