Slice your hard-boiled eggs in half and transfer the yolks to a mixing bowl. Set the cooked egg whites aside.
To your egg yolks, add mayo, mustard, tomato paste, lemon juice, horseradish, hot sauce, and celery salt. Beat with a mixer until smooth, then transfer to a piping bag. Set aside.
Place the Tajin in a small shallow bowl, then dip the top of each cooked egg white (the side with the hole) into the seasoning (see picture above). Place each prepped egg white onto a serving platter.
Pipe the egg yolk mixture into each egg white. Top each one with a piece of bacon, celery, and an olive or pickle slice. Serve!