Hello~Yes, GERD can cause the heart palpitations as can a hiatal hernia. The fact that you get them after you eat tells me this may be the cause. I get them after I eat or drink, especially if I bend down after-wards, I hate them. Try drinking some pure aloe vera juice after you eat, this sometimes helps, also, eat smaller portions so your stomach isn't so full, if it is a hiatal hernia, it can press up through the diaphragm, sometimes, when it does this, it can touch the cardiac reflex, this in turn can cause those horrid skips.
I would certainly ask your GP or gastroenterologist about this as well, there are tests for checking for a hiatal hernias.