After hitting the red carpet for Saturday Night Live's 40th Anniversary on Feb. 15, it was clear something was off with actor Chevy Chase.

On top of a noticeable weight gain, the 71-year-old appeared to be out of breath and sweating profusely, leaving fans extremely concerned for his health.

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chevy chase

"Chevy Chase is NOT ok… Guy looks and sounds terrible," one Twitter fan wrote.

"You guys, is Chevy Chase ok? I'm concerned. Clark? Are you ok?" added another, referencing the character from actor's hit 'National Lampoon' films.

chevy chase

Chase in 'National Lampoon's Christmas Vacation' in 1989.

The 'Man of the House' star, who was part of the original 'SNL' cast back in 1975, chatted with Carson Daly at the event and appeared to be extremely uncomfortable during the interview.

Watch:

https://www.youtube.com/watch?v=YrHuif1330Y