Cut bell pepper in half lengthwise; discard seeds and membranes. Place pepper halves, skin sides up, on a foil-lined baking sheet; flatten with hand. Broil 10 minutes or until blackened. Place in a zip-top plastic bag; seal. Let stand 5 minutes. Peel and cut into strips.
Heat oil in a large nonstick skillet over medium-high heat. Add chard, salt, crushed red pepper, 1/8 teaspoon black pepper, and garlic to pan; sauté 1 1/2 minutes or until chard wilts, stirring frequently.
Arrange bread in a single layer on a baking sheet; broil 3 minutes on each side. Combine chives, thyme, cheese, and remaining 1/8 teaspoon pepper in a small bowl; spread 2 teaspoons cheese mixture over one side of each bread slice. Arrange roasted pepper slices evenly over cheese; top with chard mixture.