In a large saucepan over medium-high heat, bring 2 in. of water to a boil. Add chard; cook, covered, until crisp-tender, about 5 minutes. Drain; set aside.
In same saucepan, heat oil over medium-high heat. Add pepper, tomato and onion; saute until pepper is crisp-tender, 3-4 minutes. Add garlic; cook 1 minute more. Stir in next five ingredients; add cooked chard. Cook and stir until pepper is tender, 3-4 minutes ; add lemon juice. Top with almonds.
To toast nuts, bake in a shallow pan in a 350° oven for 5-10 minutes or cook in a skillet over low heat until lightly browned, stirring occasionally.