Mix the melted butter, ricotta cheese and milk. Add the eggs and mix to combine. Add the baking powder, salt, pepper and mix. Add the flour and mix with a spoon until well combined. Add the spinach, zucchini, ham and combine.
Heat up a skillet (15cm / 6 inches) over medium heat with 1 tbsp olive oil. Drop 1/3 or ½ of the batter (depending on the size of the skillet) and spread it out. Lower the heat to medium-low and cook it shaking the pan a little to make sure it does not stick, until the bottom is golden, approximately 4-5 minutes. Flip it over and cook it on the other side until golden brown. Repeat with the rest of the batter, adding more oil if necessary.
You can serve them with salad, or if you like, with cream cheese, chives, salt and pepper.