I had 3 thick small pancakes.
I just put the ingredients I used into MFP as a recipe, set it to make 6 pancakes and it worked out how many calories for me.
I used 100g plain flour, 1 egg and 250ml semi skimmed milk and they came out as 90 calories each. I had 3 and my husband had 3. I could have done them thinner for less calories but I couldn't be bothered to go back into MFP and change the quantity that the mixture makes.