Phalaenopsis leaves turning yellow/ orange/ pink

[WeirdGuySeattle]

As many others said, too much light. Put it in a slightly shadier spot.
Indoor windows start getting way more light as the sun drops lower in the sky in the fall. Good for high light plants, but can scorch something like this phal, or a paph.
I think with backing that plant off the window a bit (good indirect light) - you will have minimal damage to that plant.
Also - your watering seems fine - the medium looks dry, but the plant seems to have good stiff leaves, no wrinkles, but I would agree at the time you took the picture was probably watering day.