Preheat the oven to 400 degrees.
In a small saucepan melt butter with the garlic and let the mixture cool. In a shallow bowl or pie plate toss the crumbs with the Parmesan. Dip the chicken cubes first in the butter and then in the bread crumb mixture, making sure that each cube is coated well with crumbs. Arrange the chicken in one layer on a baking sheet and bake in the preheated oven for 15 minutes or until the chicken is just cooked through. Transfer to paper towels to drain.