Grate 2 tsp. zest from lemon; mix with remaining dressing. Cut lemon into 4 slices; set aside. Heat remaining dressing in large skillet on medium-high heat. Add shallots; cook and stir 2 to 3 min. or until crisp-tender. Add all the peas; cook and stir 1 to 2 min. or until crisp-tender. Stir in cheese and half the mint.