I’m gonna go out on my feminist limb here and say that if he isn’t supporting you, that is his choice… but he should then have to worry about and pay for his own food.
But I know that doesn’t go over that well for plenty of people… so. I’ll second the idea of making a keto main for dinner, and separate sides for the two of you. Maybe you can compromise and make the main dish and just your own side… if he wants more that doesn’t go with your way of eating, I’m sure he is capable of heating up some pasta or popping some bread in the toaster.
Not everyone has to come around to this lifestyle, though we sure do want them to. What people SHOULD do is be supportive.
Why are you doing keto? Focusing on that could be a really important starting point and a way for you to resist temptation and make a Fathead pizza when he orders out, or insist that your new way of life is improving your wellbeing, and ask that he at least be supportive.
On the go breakfasts… bacon in a bag
Hard boiled eggs. Cheese sticks. Salami with cream cheese roll-ups. If you like avocado, that’s pretty easy to do. People here will talk about skipping breakfast… I wouldn’t push that until you feel like you’re ready. This is NOT a deprivation way of eating, or way of life. You shouldn’t have to suffer to be healthy. I was a crazy carb and sugar addict, and those first few weeks were not easy… but I promise it gets better. I now regularly join friends and family members who are eating VERY non-keto things, goodies I would have pounced on before, and I don’t even feel tempted. It is pretty remarkable.
One other thing that might work for you, depending on your level of carb addiction/cravings… asking him to support you in simply keeping his junky food somewhere where you can’t access it. Seriously, can he store his bags of chips in the car, or keep his candy at work? I understand that mealtime presents a different challenge, but as far as snacks go, you really shouldn’t need to be exposed to them all the time. I bet y’all can find a way to work this out 