Melt the butter in a saucepan over medium heat. Add the bell pepper and onion and cook until softened, about 3 minutes. Stir in the flour and cook 1 minute. Add the corn, chicken broth, cream cheese, thyme, garlic powder and paprika and cook, stirring, until the cream cheese is melted, 1 to 2 minutes. Fold in the chicken and scallions and season with salt and pepper. Set aside.
Separate the biscuits, then cut each biscuit in half around its equator to make 2 thin discs (for a total of 32 discs). Using multiple mini muffin pans, place a dough disc into each of 32 cups and use your fingers to press the sides of the dough up to the top of each cup. Spoon in the corn chowder. Sprinkle the tops with the cheese and bake until golden and bubbly, 12 to 14 minutes. Gently remove the bites from the pan using a spoon and place on a plate.
Any remaining chowder freezes well for another use.