If you prefer sausage over bacon, then use cooked sausage in place of the bacon. (mymontanakitchen.com)
Sometimes I also use leftover ham in place of the bacon. (renebeagle.com)
If you want to adhere to the vegetarian lifestyle while remaining keto, the solution is all in the seasoning!I love using chopped mushrooms in place of bacon bits. (ruled.me)