If I understand the question correctly, it's not about foliar feeding, per se. It's about adding a micro-nutrient regiment. This is something I definitely recommend for edibles. You can grow a pretty healthy plant with just N-P-K, but for the healthiest, most nutritious, with good pest and disease resistance, and highest brix levels, I do recommend (and personally add) micronutrients. This can be done via foliar and/or by adding soil amendments like Azomite.
For foliar feeing, I don't think the chelation helps, but I don't think it will hurt, either. I know chelation allows roots to absorb nutrients at a wider PH range but I don't think PH is an issue with foliar feeding. I COULD be wrong on that, though!