Heat butter and oil in a large straight-sided skillet over medium-high heat, stirring until butter melts. Add shallots; cook 3 minutes or until soft, stirring occasionally. Add jalapeño; cook 1 minute, stirring frequently. Add butternut squash; cook 8 minutes or until tender, stirring occasionally. Add chickpeas; cook 1 minute, stirring occasionally. Add couscous, and cook 1 minute, stirring constantly. Stir in 1 3/4 cups boiling water and salt; remove pan from heat. Cover and let stand 8 minutes. Fluff couscous mixture with a fork. Add fresh parsley and lemon juice; toss gently to combine. Top with Parmesan cheese.