Earl Thomas is getting some superhero support from one of his biggest fans ... Chris Pratt ... who tells TMZ Sports he's praying for the injured Seahawks safety to get well soon.
Thomas broke his leg against the Panthers on Sunday -- and has been contemplating retirement ever since.
Pratt says he'll support whatever decision Thomas makes -- and wants the superstar to know how much he appreciated watching him play.
Question is ... do the Hawks still have a shot at the Super Bowl without ET?