Hi
I am newly diagnosed T2 also, and all food has suddenly turned into a minefield of "can I eat that?" "What will happen if I do? And about a 1000 other questions related... I know you dig!
Anyway in relation to your question, I would suggest it's the tomatoes that have you spiking, tomatoes being a fruit and fruit being known for being high in sugar Albeit natural sugar but sugar all the same. My doctor recommended that I steer clear of fruit almost entirely except berries (strawberries, blueberries that type of thing) which I hate anyway lol.
Try something more protein based or I have a small bowl of porrigde with a small amount of Stevia or some wholemeal toast with peanut butter, I haven't had any problems so far and I am in no way an expert so what works for me might not be good for you so I am in no way offering a medical opinion but hope you find a tasty/healthy way to still enjoy brekki
X All the best