1. Heat a large nonstick skillet over medium-high heat. Add 1 tablespoon oil to pan; swirl to coat. Add poblano chiles and onion. Cook 5 minutes or until edges of vegetables are browned, stirring occasionally; add garlic last 1 minute of cook time. Remove vegetables from pan; keep warm.
2. Heat 1 tablespoon oil in pan. Add yellow squash and zucchini; cook 9 minutes or until edges are browned, stirring occasionally.
3. Stir in onion mixture, corn, and next 3 ingredients (through green chiles). Cook 3 minutes or until thoroughly heated, stirring frequently to deglaze pan. Remove from heat; stir in green onions. Sprinkle with cilantro, and serve with lime wedges.