Congrats on your surgery.
What’s your plan? At 4 weeks most are just starting soft food - think mushy foods, soft fish, stews, etc., foods with little bite, crunch or chew. Pork skin wouldn't be considered a soft food neither would pizza or a pizza alternative. It’s important to go through the stages so you don’t damage your tummy, etc, post surgery - you’re still healing. Were you given a a food plan of what you can or can’t eat in the first couple of months by your surgeon &/or your dietician?
At 4 weeks, I wasn’t hungry at all & was lucky if I could eat about 1/4 cup of food three times a day, no snacking. Are you really hungry or is it head hunger? If your craving foods you used to eat like chips, pizza, etc., it’s likely head hunger & not real hunger. If it’s a legitimate hunger, try eating small pieces of protein like cheese, chicken, egg, yoghurt or sip a protein shake or some broth. I found that sprinkling a little extra salt on food like egg, cucumber or chicken helped with any desire for a salty snack.
There’s a lot of learning about why you eat, what you eat & why you eat and the weight loss phase is the best time to understand what all that means for you. Now’s the time to break old food habits & start new ones. You’ll be able to work it out. If you’re feeling lost or confused, speak to your dietician, your medical team or bring it up in this forum - lots of people here happy to help.
Hope I don’t sound like I’m lecturing. ☹️ We all have our own experiences on this journey. Good luck on yours.