I agree that it looks wonky. My first suspect would be your thermometer. I've seen temps that jump up and down when my thermometer battery is going out. Next I would wonder if anything has changed with your sleeping schedule. If those don't explain the jumping temps I would keep tracking to see if you ovulate. Hoping it's just a thermometer issue.
I'm going to be different and say that it's not that wonky at all. I've seen much worse temp changes on BFP charts! You haven't O'd yet and you could easily still have a cover line of 97.6 or so which isn't that high of a temp line. Remember it's the overall cycle that matters not each individual temperature. Your last chart looks fine and each chart will not look the same ever!
Best of luck!
get a glass thermometer and then you won't have to worry about the battery. mine was $5 at wallmart and i love it! watch your temps cuz when mine were going up and down like that my OB said that it's because your body is trying to get you to O so you keep getting a small LH serge. Just someting to pay attention to. Arent you glad you chart? Just one of the benefits!!!!
Gina & Rob 6/3/00
Proud Mom of Alyssa 11/19/04 and Logan 9/4/07