Blood sugar rose at 2 hours from 1 hour 45 minutes. why?

For my last meal today, I ate 4oz of chicken, lettuce and spinach with lite italian dressing, and about a cup of cauliflower roasted in olive oil. After eating, I went on a 20 minute walk (well, grocery shopping).

After my last meal, my blood sugar was 101 at the 1 hour 45 minute mark.... then 110 at the 2 hour mark. What's going on here? Why is it going up not down? Should I be testing at 2 hours after the first bite or the last?

Also, in case it mattes, I had a snack 3 hours before dinner -- a 180 calorie serving of almonds and a 120 calorie serving of unbuttered popcorn.