1. Preheat oven to 450°.
2. To prepare guacamole, wrap garlic cloves in foil; bake at 450° for 15 minutes or until soft. Let cool slightly; remove skins and discard. Place garlic in a medium bowl; mash with a fork.
3. Preheat broiler.
4. Cut bell pepper and poblano in half lengthwise; discard seeds and membranes. Place pepper halves, skin sides up, on a foil-lined baking sheet; flatten with hand. Broil 15 minutes or until blackened, turning frequently. Place in a zip-top plastic bag; seal. Let stand 10 minutes. Peel and finely chop. Add peppers, onions, and next 4 ingredients to mashed garlic; stir well.
5. Reduce oven temperature to 425°.
6. To prepare chips, combine tortilla wedges, 2 teaspoons juice, and 1/4 teaspoon salt in a large bowl, tossing to coat. Arrange tortillas in a single layer on a baking sheet coated with cooking spray. Bake at 425° for 10 minutes or until crisp and lightly browned, turning once. Cool 5 minutes. Serve with guacamole.
When garlic is roasted, its flavor mellows to nutty and slightly sweet, and it softens into a spread that has the consistency of butter. Squeeze the roasted cloves to remove the garlic pulp.