Mediterranean Grilled Zucchini with Tomato and Feta

zucchini (or zucchini and yellow squash), tops removed, sliced in halves length-wise

Slat and freshly ground pepper

garlic powder

Extra virgin olive oil

Juice of 1/2 lemon (about 1 tbsp lemon juice)

Zest of 1 whole lemon

crumbled feta cheese

pearl tomatoes chopped, drained in a colander

green onion (both the white and greens), chopped