What Bracha should one make on pita chips, Hamotzi or Mezonos ?
I heard from my Rebbi Rav Menachem Feifer Shlita״h that it depends. If it was made from existing pita it is Hamotzi, but if it is made ' from scratch ' it is Mezonos. Check out this source from a Brachos Site
I was sure it was hamotzi but your question made me doubt and check. It is indeed a machloket and seems to depend on the specific product.
For Stacy's Pita chips, the OU poskim say it is hamotzi but they acknowledge others say mezonot (see here).
dinonline says, like your source and Rav, that it depends if the chips were initially baked as a pita then fried (in which case it is hamotzi) or directly baked as a snack (then mezonot). Most relevant quote from R Yehoshua Pfeffer is
If the pita bread is baked [initially] as regular bread, and can be eaten as bread (even if not well done), it follows that the berachah will remain hamotzi even after it is made into chips. This is because once made into regular bread, the bread will not lose its status by being cut up and re-baked (see Mishnah Berurah 168:62; Minchas Yitzchak 1:71:8; Yaskil Avdi 1:9).
If the initial baking is for the purpose of “chips” then the berachah will be mezonot (see Kehilas Yaakov Berachos 16).
PS. Interestingly, in Israel, some hekhserim will print the bracha abbreviation on the package in difficult cases like these