Flower shape change on Secondary Spike?

[Irielicious]

This is a rescue I bought last July, it recently put out a secondary flower spike. The first bud opened today but I notice some structures seem mutated. The petals looks underdeveloped, the anther cap looks larger than normal and the lip looks more like a cup. When I acquired it the flowers looked normal (from what I remember).


I fertilize any orchids actively growing 20-14-13.
I do magnesium soaks monthly (most my orchids are bare root)
Very large south facing windows with direct sun early in the morning
Relative humidity stays about 55%
Temps 75+/- 5 degrees Fahrenheit
Good air movement
No direct central air and heat vents near the orchid
Water EOD
No growth hormones/keiki paste used
Seaweed/willow water soaks in spring and summer months

First picture is the original flower with subsequent flower pictures are the flowers now. My fertilizer information and lastly the whole plant being the one in the forefront of the picture.

***Picture update*** I found a better picture this the orchid was when I purchased it, looks normal not peloric???


Any ideas on the culprit?