Nooooo.....?
Former statement implies Leo thinks Chase was cute when he was skinny. The conjunction "but" implies he wants something more from him in the present/future as opposed to the past; hence, Leo tells Chase he "should eat more" as a nudging suggestion in hopes to appeal to his newfound appetite. Leo expresses his sexual taste for THICC otters when he states he desires "real big chunk" and dislikes "way too skinny"; the phrase "too [insert adjective here]" sets a negative connotation in just about any language and describes someone of having a trait that seems excessive and unhealthy. I fail to understand how you didn't understand even your own post...