You might find you need some insulin for this meal, the clue is in the 'sweet chilli' Is this a prepared sauce, and does it contain sugar?
Having said that, you may not need the full 4 units, it may be a question of testing before you eat, testing 2 hours after, and seeing what’s happened. Make a note of your results so you know for next time.
Eventually you should be taught how to carb count, so you can adjust your insulin to suit what you are eating. In the meantime, cut back on the amount of insulin you need for this meal, and work upwards if it didn’t seem enough. Have some form of hypo treatment ready in case you drop too low (you should have something available at all times anyway, as you know).
Another thing you may find, is that in a protein heavy meal, some of the protein is converted to glucose in the digestion process, so you may need more insulin than you think, only later on. So if you test again at four hours and find you’ve gone up, this is what might be happening.