One habit I picked up doing low carb and intermittent fasting is eating a giant salad every day. It's slightly high for keto but well within general low carb limits. This is usually big enough that its heaped high on a serving platter instead of a salad bowl. I include:
Lettuce, raw spinach, raw kale, tomato, onion, sweet or green peppers, avocado, olives, garlic, boiled eggs, sometimes some meat, shredded cheese, chia seeds, sunflower seeds, ground flax seeds, seasoning to taste, and about a quarter cup of oil based salad dressing.
The salad is usually somewhere in the range of 600 to 800 calories depending on my specific ingredients that day. It comes in at around 30 to 40 grams carbs, 30 to 40 grams protein, and 40 to 50 grams of fat.