It doesn't make sense for Chelsea to take a HUGE gamble on someone who has just completed 1 full season of management and hasn't managed even 100 games, Enzo has already rejected Seville because he wants to be in the Premier League, and the appointment wouldn't convince the Chelsea fans who barely know his style, has management that level of high expectations and would be walking into a poisoned chalice, the Leicester players love and respect Enzo and he feels like he can genuinely build something in Leicester.
I highly doubt they're seriously considering Enzo, just admiring him. He's just too Green for a top 6 team but perfect for us.