We had the chia look this early fall as well, in areas that are not making lawn very well. Each year they die off and the ground is bare once again. I don't know that seeding the area fails, because of tree root competition, shade, compaction, no-irrigation or what but I am pretty sure the chia clumps will be barren again. I would like to do a "real seeding", but I can't control the hoses on that place.
I will try an early spring seeding in a particular area after the final clean-up, and rely on springs rains to get it going. My best method will not be aerating.
Never heard the term "Frost Seeding".
Sounds like something Jack Frost would be doing, because he's an evil little gnome.