Hi Flair,
Your HbA1C is a measure of your average Blood Glucose over the last approximately 120 days, so it isn't a spiky number, unlike your Fasting BG which can be affected by :
What you eat the previous day
Dawn Phenomenon
Illness
Stress
Exercise
The way you write your question makes it seem like either you have some way of measuring your HbA1C very frequently, or you measure your fasting, pre-prandial and post-prandial BG quite infrequently. Which would be unusual for a Diabetic, but you say that you don't have Diabetes (which I interpret as that you never had full-blown Diabetes, but perhaps took control while in the 'pre-diabetes' range).
Your actual HbA1C figures and your 'finger-prick' BG figures are good - i.e. in the 'normal range' - but I expect that you already know that.