I see that there have been many answers to your question now. It seems that people are missing a bit of perspective on your situation as you changed your diet so recently, I don't see that altering small details of your diet at this stage would be useful. Several foods can trigger acne in some poeple, as other answers have mentioned; these include nuts, eggs, fruit and dairy (though you are not eating dairy). However if untill 3 weeks ago you were eating grains, diary, fries and soda without acne I think it is unlikely that things like the fruits, or the ratio between fat, carbs and protein would be the problem.
Remember that this is a radical change to your diet in a short time which can have many effects. I would be cautious of trying to identify possible problem foods for now as it could simply be getting use to the change of diet that is the cause. The diet you are eating sounds good. Keep eating as you are for at least another 3 weeks and see if the acne improves. If you are still getting acne then maybe consider making changes.
Additional points: If you are eating oily fish (like tuna, sardines, mackerel and sardines) and grassfed meat regularly and avoiding seed oils you will probably not need the fish oil supplements. Taking acount of where you live and the time of year I would personlly limit the vitamin D3 supplements to 2000iu/day unless you are getting your blood levels tested.