I have read if u you want to use correlative conjunctions to join two items u you need the equal grammar, for example ' either[a noun] or [ a noun]
what about the following example :
# I think the chores are either boring and a waste of time.
The example you have given is ungrammatical, but it is not because "boring" (an adjective) and "a waste of time" (a noun phrase that has adjectival value) cannot be conjoined. That is perfectly fine.
The problem is that you have used "either . . . and . . .," which is just as ungrammatical as "both . . . or . . . ." The correct constructions are "either . . . or . . ." and "both . . . and . . . ." "Or" goes with "either," and "and" with "both."
In the future, when you post on GE and have occasion to use the word "you," please write it with all three of its letters. On this website, we do not (or very rarely) use abbreviations from text-messaging culture.