Generally I've heard that trimming is much healthier than plucking.  Dr. Oz (I know, I know) did a segment where he explained how plucking can expose the follicle root to irritants and even cause infections.  I'd be cautious about over-plucking.

I am a big fan of tofu since it's loaded with protein and very low in fat.  You can buy blocks of tofu or get soy milk.  Cooking with tofu is super easy, since it has no natural flavor on it's own it can be marinaded in many different sauces.  Recently I traded out my coffee creamer for soy milk recently and really love it.

Lean beef, fish, greek yogurt, and legumes (peanuts, beans, lentils, peas) are also great options for variety