Looks a lot like lymphoid leukosis, in which case it is virally transmitted and chicken-specific - nothing you personally need to worry about: https://www.poultryworld.net/Health/health_tool/Lymphoid-leukosis/
Thank you for the informative article. The article states that it is passed down through the egg.
You took some great pictures & I really appreciated your light banana humor in the middle of such a stressful situation.
)
I do try to smile even in the toughest of times. In some weird way, humor seems to bring me more comfort...even when dealing with sickness in humans. 