Here is how I remodeled my kitchen:
Fridge 15 Amp
Microwave 20 Amp
2 Circuits: 20 Amp, both are totally gfci protected. one wall has the 2 gfci's. the other has 2 duplexes from the gfci's. from there, there is a duplex by the sink. i broke the hot and neutral tabs off, and there are 2 circuits in that outlet. I always split an "odd" outlet. if i had to put a fridge on a kitchen circuit and not a dedicated one, i'd keep it off a gfci or put it on its own gfci on one of the circuits. i always try to keep the 2 kitchen circuits on the same hot leg, unless i can't because i have to keep all the circuits balanced.
