Looks like sunburn spots to me or maybe the leaves are touching the screen in the window.

elongated petioles indicate not enough light and/or too much fertilizer. Refer to for a chart at the end of the article with common problems and descriptions.

Cultural Guidelines for Commercial Production of African Violets (Saintpaulia ionantha)1https://edis.ifas.ufl.edu

J. Chen and R. J. Henny2

African violets (Saintpaulia ionantha) are consumer favorites and have been enjoyed as flowering houseplants since their introduction into the United States in 1894. They readily adapt to interior conditions and are commonly seen as specimen plants, in dish gardens, and in terrarium plantings. This article is intended to provide guidelines for the commercial production of African violets including propagation, cultural requirements, and common physiological problems.

I was so distracted by the spotting that I did not notice the extended petioles. Very helpful article...thanks so much!

Glad it helped! The chart at the end is something I plan to print out and keep handy as it covers all sorts of problems in one convenient reference sheet.