このピザそう捨てたものでもないよ。

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

pizza; fat, ugly person

so; really; seeming; appearing that; seeming that; looking like; having the appearance of

to throw away; to cast away; to dump; to discard; to abandon; to desert; to leave; to give up; to resign

person

be; is; indicates past or completed action; indicates light imperative

too; also; in addition; as well; (not) either (in a negative sentence); both A and B; A as well as B; neither A nor B (in a negative sentence); even; as much as; as many as; as far as; as long as; no less than; no fewer than; even if; even though; although; in spite of; further; more; again; another; the other

not; emphatic suffix

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!