Crazy heart rate when breaking fast?

Hi all, I’ve been doing a kind-of “OMAD with a snack” fast where I break my fast around 17:00 and have dinner a few hours later (so I guess more like a 20:4).

I find that when I do break my fast, my heart rate increases noticeably when I eat. It’s doesn’t feel unhealthy, but is akin to say that flutter you get after a few coffees.

Is this normal? Perhaps it’s the sudden change in metabolic rate which leads to the heart rate increase.