Preheat the oven or toaster oven to 400°F (200°C).
Drain any excess moisture from the one 15 oz. can of garbanzo beans and pat them dry with paper towels so they are as dry as possible.
In a bowl, toss the chickpeas with 2 tsp. olive oil and 2 tsp. finely minced garlic until evenly coated.
Lightly spray a roasting pan or rimmed baking sheet with nonstick spray or brush with a little oil. Spread the chickpeas in a single layer on the pan.
Roast the chickpeas for about 20–25 minutes, stirring or shaking the pan once halfway through, until they are beginning to crisp. Remove from the oven and let cool.
Make sure the 3 cups washed lettuce and 3 cups washed greens are very dry (use a salad spinner or pat dry with paper towels).
In a large bowl, combine the lettuce and greens and toss with 3 T Mediterranean Salad Dressing until the leaves are evenly moistened.
Divide the dressed greens among four salad bowls. Sprinkle one-fourth of the roasted chickpeas and one-fourth of the 2 oz. crumbled Feta over each salad.
Season each salad with salt and fresh ground black pepper to taste and serve immediately.