Preheat oven to 420°F. Line a baking sheet with parchment paper. Drizzle flesh side of eggplant halves with olive oil. Turn over and stab with a fork 5-6 times all over the skin side.
Roast for 35-40 minutes or until you can easily stab the eggplant. Scoop out the flesh and transfer to a colander to drain the liquids.
Squeeze your lemon half into a large bowl. Add the eggplant and toss - this helps prevent discoloring. Next mix in the olive oil to coat. Then, add the vegetables, herbs, feta and seasonings.
Notes
I quartered my peppers and onion and threw them into my mini food processor for a few spins to get that fine chop.Store leftovers in an airtight container for up to 2-3 days.