Is replacing a kitchen tile countertop too difficult for DIY?

Messy because of the chipping off of the tile and all the scrapping down of the old thinset , no reason you can t do it. I do have a time and mess saving suggestion for you.If you have a tile edge or wood edge, take that off , along with the small edge that over hangs a bit,( nip off w/ some tile nippers) and retile over the whole thing , saving time and mess.Now this may or may not work if you have a drop in burner unit w/ a down draft but it may.Explore the possibility , I would. You ll have even a stronger top than before. You ll have to do a few things different if you tile over it , but that is no problem at all . Any questions you can e mail me GL